Class: NumRu::NArray

Inherits:
Object
  • Object
show all
Defined in:
lib/numru/narray_ext.rb,
ext/numru/narray/narray.c

Overview

Numerical Array Extention for Ruby

  (C) Copyright 2000-2008 by Masahiro TANAKA

This program is free software.
You can distribute/modify this program
under the same terms as Ruby itself.
NO WARRANTY.

Direct Known Subclasses

NArrayScalar, NMatrix, NVector

Constant Summary collapse

NARRAY_VERSION = 
rb_str_new2(NARRAY_VERSION)
SUPPORT_BIGMEM = 
Qtrue
BYTE = 
INT2FIX(NA_BYTE)
SINT = 
INT2FIX(NA_SINT)
LINT = 
INT2FIX(NA_LINT)
LLINT = 
INT2FIX(NA_LLINT)
INT = 
INT2FIX(NA_LINT)
SFLOAT = 
INT2FIX(NA_SFLOAT)
DFLOAT = 
INT2FIX(NA_DFLOAT)
FLOAT = 
INT2FIX(NA_DFLOAT)
SCOMPLEX = 
INT2FIX(NA_SCOMPLEX)
DCOMPLEX = 
INT2FIX(NA_DCOMPLEX)
COMPLEX = 
INT2FIX(NA_DCOMPLEX)
ROBJ = 
INT2FIX(NA_ROBJ)
OBJECT = 
INT2FIX(NA_ROBJ)
NONE = 
INT2FIX(NA_NONE)
CLASS_DIMENSION = 
INT2FIX(0)
ENDIAN = 
INT2FIX(0)

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.[](*args) ⇒ Object

singleton method:

NArray[object]



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# File 'ext/numru/narray/narray.c', line 817

static VALUE
 na_s_bracket(int argc, VALUE *argv, VALUE klass)
{
  VALUE v = rb_ary_new4(argc, argv);
  return na_ary_to_nary( v, klass );
}

.byte(*args) ⇒ Object

class method: byte(size1,size2,…,sizeN)



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# File 'ext/numru/narray/narray.c', line 413

static VALUE
 na_s_new_byte(int argc, VALUE *argv, VALUE klass)
{ return na_new2(argc, argv, NA_BYTE, klass); }

.cast(array, type = nil) ⇒ Object 



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# File 'lib/numru/narray_ext.rb', line 11

def self.cast(array,type=nil)
  case array
  when NumRu::NArray
  when Array
    array = NumRu::NArray.to_na(array)
  else
    raise ArgumentError, "1st argument must be NumRu::NArray or Array"
  end
  type = array.typecode if type.nil?
  shape = array.shape
  na = self.new(type,*shape)
  na[] = array
  na
end

.complex(*args) ⇒ Object

class method: complex(size1,size2,…,sizeN)



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# File 'ext/numru/narray/narray.c', line 448

static VALUE
 na_s_new_complex(int argc, VALUE *argv, VALUE klass)
{ return na_new2(argc, argv, NA_DCOMPLEX, klass); }

.dcomplex(*args) ⇒ Object

class method: complex(size1,size2,…,sizeN)



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# File 'ext/numru/narray/narray.c', line 448

static VALUE
 na_s_new_complex(int argc, VALUE *argv, VALUE klass)
{ return na_new2(argc, argv, NA_DCOMPLEX, klass); }

.dfloat(*args) ⇒ Object

class method: float(size1,size2,…,sizeN)



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# File 'ext/numru/narray/narray.c', line 438

static VALUE
 na_s_new_float(int argc, VALUE *argv, VALUE klass)
{ return na_new2(argc, argv, NA_DFLOAT, klass); }

.div(obj1, obj2) ⇒ Object

singleton method: NArray.div( obj1, obj2 )



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# File 'ext/numru/narray/na_func.c', line 787

static VALUE
 na_s_div(VALUE klass, VALUE obj1, VALUE obj2)
{ return na_bifunc( obj1, obj2, klass, DivBFuncs ); }

.float(*args) ⇒ Object

class method: float(size1,size2,…,sizeN)



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# File 'ext/numru/narray/narray.c', line 438

static VALUE
 na_s_new_float(int argc, VALUE *argv, VALUE klass)
{ return na_new2(argc, argv, NA_DFLOAT, klass); }

.int(*args) ⇒ Object

class method: int(size1,size2,…,sizeN)



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# File 'ext/numru/narray/narray.c', line 423

static VALUE
 na_s_new_int(int argc, VALUE *argv, VALUE klass)
{ return na_new2(argc, argv, NA_LINT, klass); }

.lint(*args) ⇒ Object

class method: int(size1,size2,…,sizeN)



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# File 'ext/numru/narray/narray.c', line 423

static VALUE
 na_s_new_int(int argc, VALUE *argv, VALUE klass)
{ return na_new2(argc, argv, NA_LINT, klass); }

.llint(*args) ⇒ Object

class method: llint(size1,size2,…,sizeN)



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# File 'ext/numru/narray/narray.c', line 428

static VALUE
 na_s_new_llint(int argc, VALUE *argv, VALUE klass)
{ return na_new2(argc, argv, NA_LLINT, klass); }

.mul(obj1, obj2) ⇒ Object

singleton method: NArray.mul( obj1, obj2 )



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# File 'ext/numru/narray/na_func.c', line 782

static VALUE
 na_s_mul(VALUE klass, VALUE obj1, VALUE obj2)
{ return na_bifunc( obj1, obj2, klass, MulBFuncs ); }

.mul_add(*args) ⇒ Object

singleton method: NArray.mul_add( obj1, obj2, rank, … )



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# File 'ext/numru/narray/na_func.c', line 1349

static VALUE
 na_s_mul_add(int argc, VALUE *argv, VALUE klass)
{
  if (argc<3)
    rb_raise(rb_eArgError, "wrong # of arguments (%d for >=3)", argc);
  return na_mul_add_body(argc-2,argv+2,argv[0],argv[1],klass,0);
}

.new(*args) ⇒ Object

class method: new(type, size1,size2,…,sizeN)



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# File 'ext/numru/narray/narray.c', line 404

static VALUE
 na_s_new(int argc, VALUE *argv, VALUE klass)
{
  if (argc == 0)
    rb_raise(rb_eArgError, "Argument required");
  return na_new2(argc-1, argv+1, na_get_typecode(argv[0]), klass);
}

.object(*args) ⇒ Object

class method: object(size1,size2,…,sizeN)



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# File 'ext/numru/narray/narray.c', line 453

static VALUE
 na_s_new_object(int argc, VALUE *argv, VALUE klass)
{ return na_new2(argc, argv, NA_ROBJ, klass); }

.ref(self) ⇒ Object

singleton method: NArray.refer( other )



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# File 'ext/numru/narray/narray.c', line 318

static VALUE
 na_s_refer(VALUE klass, VALUE self)
{
  return na_wrap_struct_class(na_ref_alloc_struct(self), klass);
}

.refer(self) ⇒ Object

singleton method: NArray.refer( other )



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# File 'ext/numru/narray/narray.c', line 318

static VALUE
 na_s_refer(VALUE klass, VALUE self)
{
  return na_wrap_struct_class(na_ref_alloc_struct(self), klass);
}

.scomplex(*args) ⇒ Object

class method: scomplex(size1,size2,…,sizeN)



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# File 'ext/numru/narray/narray.c', line 443

static VALUE
 na_s_new_scomplex(int argc, VALUE *argv, VALUE klass)
{ return na_new2(argc, argv, NA_SCOMPLEX, klass); }

.sfloat(*args) ⇒ Object

class method: sfloat(size1,size2,…,sizeN)



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# File 'ext/numru/narray/narray.c', line 433

static VALUE
 na_s_new_sfloat(int argc, VALUE *argv, VALUE klass)
{ return na_new2(argc, argv, NA_SFLOAT, klass); }

.sint(*args) ⇒ Object

class method: sint(size1,size2,…,sizeN)



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# File 'ext/numru/narray/narray.c', line 418

static VALUE
 na_s_new_sint(int argc, VALUE *argv, VALUE klass)
{ return na_new2(argc, argv, NA_SINT, klass); }

.srand(*args) ⇒ Object 



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# File 'ext/numru/narray/na_random.c', line 158

static VALUE
 na_s_srand(int argc, VALUE *argv, VALUE obj)
{
    VALUE sd;
    u_int32_t seed, old;

    rb_secure(4);
    if (rb_scan_args(argc, argv, "01", &sd) == 0) {
	seed = random_seed();
    }
    else {
	seed = NUM2ULONG(sd);
    }
    old = rand_init(seed);

    return ULONG2NUM(old);
}

.to_na(*args) ⇒ Object

singleton method:

NArray.to_na( string, type, size1,size2,...,sizeN )
NArray.to_na( array )



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# File 'ext/numru/narray/narray.c', line 791

static VALUE
 na_s_to_na(int argc, VALUE *argv, VALUE klass)
{
  if (argc < 1) {
    rb_raise(rb_eArgError, "Argument is required");
  }
  if (TYPE(argv[0]) == T_STRING) {
    return na_str_to_na(argc-1,argv+1,argv[0]);
  }
  if (argc > 1) {
    rb_raise(rb_eArgError, "Only one array argument must be provided");
  }
  if (TYPE(argv[0]) == T_ARRAY) {
    return na_ary_to_nary( argv[0], klass );
  }
  if (NA_IsNArray(argv[0])) {
    return argv[0];
  }
  rb_raise(rb_eTypeError, "Argument must be Array or String (or NArray)");
  return Qnil;
}

.to_narray(*args) ⇒ Object

singleton method:

NArray.to_na( string, type, size1,size2,...,sizeN )
NArray.to_na( array )



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# File 'ext/numru/narray/narray.c', line 791

static VALUE
 na_s_to_na(int argc, VALUE *argv, VALUE klass)
{
  if (argc < 1) {
    rb_raise(rb_eArgError, "Argument is required");
  }
  if (TYPE(argv[0]) == T_STRING) {
    return na_str_to_na(argc-1,argv+1,argv[0]);
  }
  if (argc > 1) {
    rb_raise(rb_eArgError, "Only one array argument must be provided");
  }
  if (TYPE(argv[0]) == T_ARRAY) {
    return na_ary_to_nary( argv[0], klass );
  }
  if (NA_IsNArray(argv[0])) {
    return argv[0];
  }
  rb_raise(rb_eTypeError, "Argument must be Array or String (or NArray)");
  return Qnil;
}

Instance Method Details

#%(obj2) ⇒ Object Also known as: mod

method: self / other



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# File 'ext/numru/narray/na_func.c', line 728

static VALUE na_mod(VALUE obj1, VALUE obj2)
{ return na_bifunc( obj1, obj2, Qnil, ModBFuncs ); }

#&(obj2) ⇒ Object

method: self & other



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# File 'ext/numru/narray/na_func.c', line 732

static VALUE na_bit_and(VALUE obj1, VALUE obj2)
{ return na_bifunc( obj1, obj2, Qnil, BAnFuncs ); }

#*(obj2) ⇒ Object

method: self * other



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# File 'ext/numru/narray/na_func.c', line 720

static VALUE na_mul(VALUE obj1, VALUE obj2)
{ return na_bifunc( obj1, obj2, Qnil, MulBFuncs ); }

#**(val2) ⇒ Object 



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# File 'ext/numru/narray/na_func.c', line 612

static VALUE
 na_power(VALUE val1, VALUE val2)
{
  volatile VALUE obj1, obj2, obj3;
  struct NARRAY *a1, *a2;

  obj1 = val1;
  obj2 = val2;
  GetNArray(obj1,a1);
  obj2 = na_to_narray(obj2);
  GetNArray(obj2,a2);

  if (a1->type==NA_ROBJ && a2->type!=NA_ROBJ) {
    obj2 = na_change_type(obj2,NA_ROBJ);
    GetNArray(obj2,a2);
  } else
  if (a2->type==NA_ROBJ && a1->type!=NA_ROBJ) {
    obj1 = na_change_type(obj1,NA_ROBJ);
    GetNArray(obj1,a1);
  } else
  if (!NA_IsCOMPLEX(a1) && NA_IsCOMPLEX(a2)) {
    obj1 = na_upcast_type(obj1,a2->type);
    GetNArray(obj1,a1);
  }

  obj3 = na_make_object_extend( a1, a2, na_upcast[a1->type][a2->type],
				CLASS_OF(obj1) );

  na_exec_binary( NA_STRUCT(obj3), a1, a2,
		  PowFuncs[a1->type][a2->type] );

  return obj3;
}

#+(obj2) ⇒ Object

method: self + other



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# File 'ext/numru/narray/na_func.c', line 712

static VALUE na_add(VALUE obj1, VALUE obj2)
{ return na_bifunc( obj1, obj2, Qnil, AddBFuncs ); }

#-(obj2) ⇒ Object

method: self - other



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# File 'ext/numru/narray/na_func.c', line 716

static VALUE na_sbt(VALUE obj1, VALUE obj2)
{ return na_bifunc( obj1, obj2, Qnil, SbtBFuncs ); }

#-@ ⇒ Object

method: -self



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# File 'ext/numru/narray/na_func.c', line 835

static VALUE na_neg(VALUE self)
{ return na_unary_func( self, na_no_cast, NegFuncs ); }

#/(obj2) ⇒ Object

method: self / other



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# File 'ext/numru/narray/na_func.c', line 724

static VALUE na_div(VALUE obj1, VALUE obj2)
{ return na_bifunc( obj1, obj2, Qnil, DivBFuncs ); }

#<=>(obj2) ⇒ Object

method: self <=> other



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# File 'ext/numru/narray/na_func.c', line 901

static VALUE
 na_compare(VALUE obj1, VALUE obj2)
{ return na_compare_func( obj1, obj2, CmpFuncs ); }

#==(other) ⇒ Object 



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# File 'lib/numru/narray_ext.rb', line 48

def ==(other)
  other.kind_of?(NumRu::NArray) &&
    shape == other.shape && 
    eq(other).all?
end

#[](*args) ⇒ Object

method: [](idx1,idx2,…,idxN)



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# File 'ext/numru/narray/na_index.c', line 639

VALUE na_aref(int argc, VALUE *argv, VALUE self)
{ return na_aref_body(argc, argv, self, 0); }

#[]=(*idx, self) ⇒ Object

method: []=(idx1,idx2,…,idxN,val)



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# File 'ext/numru/narray/na_index.c', line 981

VALUE
 na_aset(int nidx, VALUE *idx, VALUE self)
{
  --nidx;

  if (nidx==0) {
    na_aset_fill( self, idx[0] );
  }
  else
  if (nidx==1) {
    if ( NA_IsNArray(idx[0]) ) {
      if( NA_TYPE(idx[0]) == NA_BYTE ) { /* then supposed to be a mask */
	na_aset_mask(self, idx[0], idx[1]);
	return(idx[1]);
      }
    }
    if ( NA_IsArray(idx[0]) ) /* Array Index ? */
      na_aset_array_index( self, idx[0], idx[1] );
    else
      na_aset_single_dim( self, idx[0], idx[1] );
  }
  else
  if (nidx>1) {
    na_aset_multi_dim( self, nidx, idx, idx[nidx] );
  }
  else /* if (nidx<0) */
    rb_raise( rb_eArgError, "No value specified" );

  return idx[nidx];
}

#^(obj2) ⇒ Object

method: self ^ other



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# File 'ext/numru/narray/na_func.c', line 740

static VALUE na_bit_xor(VALUE obj1, VALUE obj2)
{ return na_bifunc( obj1, obj2, Qnil, BXoFuncs ); }

#abs ⇒ Object

method: self.abs



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# File 'ext/numru/narray/na_func.c', line 843

static VALUE na_abs(VALUE self)
{ return na_unary_func( self, na_cast_real, AbsFuncs ); }

#accum(*args) ⇒ Object

method: accum( rank, … )



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# File 'ext/numru/narray/na_func.c', line 1229

static VALUE
 na_accum(int argc, VALUE *argv, VALUE self)
{ return na_sum_body(argc,argv,self,1); }

#add!(obj2) ⇒ Object

method: self.add!(other)



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# File 'ext/numru/narray/na_func.c', line 794

static VALUE na_add_bang(VALUE obj1, VALUE obj2)
{ return na_set_func( obj1, obj2, AddUFuncs ); }

#all? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/numru/narray_ext.rb', line 36

def all?
  where.size == size
end

#and(obj2) ⇒ Object

method: self.and other



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# File 'ext/numru/narray/na_func.c', line 884

static VALUE
 na_cond_and(VALUE obj1, VALUE obj2)
{ return na_compare_func( obj1, obj2, AndFuncs ); }

#angle ⇒ Object Also known as: arg

method: self.imag



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# File 'ext/numru/narray/na_func.c', line 855

static VALUE na_angle(VALUE self)
{ return na_unary_func( self, na_cast_real, AnglFuncs ); }

#any? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/numru/narray_ext.rb', line 40

def any?
  where.size > 0
end

#ceil ⇒ Object

method: self.ceil



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# File 'ext/numru/narray/na_func.c', line 871

static VALUE na_ceil(VALUE self)
{ return na_unary_func( self, na_cast_round, CeilFuncs ); }

#clone ⇒ Object Also known as: dup

method: dup()



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# File 'ext/numru/narray/narray.c', line 460

VALUE
 na_clone(VALUE self)
{
  struct NARRAY *org, *cpy;

  GetNArray(self,org);
  cpy = na_alloc_struct(org->type,org->rank,org->shape);
  memcpy(cpy->ptr, org->ptr, na_sizeof[org->type] * org->total);
  return na_wrap_struct(cpy,self);
}

#coerce(other) ⇒ Object

method: coerce(other)



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# File 'ext/numru/narray/narray.c', line 826

static VALUE na_coerce(VALUE self, VALUE other)
{
  struct NARRAY *a1;

  GetNArray(self,a1);
  return rb_assoc_new( na_cast_object(other,a1->type), self );
}

#collect ⇒ Object Also known as: map

iterator: collect()



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# File 'ext/numru/narray/narray.c', line 1166

static VALUE
 na_collect(VALUE obj1)
{
  na_shape_t i;
  int sz;
  VALUE v, obj2;
  struct NARRAY *a1, *a2;
  char *p1, *p2;
  void (*get)(), (*set)();

  GetNArray(obj1,a1);
  obj2 = na_make_object(a1->type, a1->rank, a1->shape, CLASS_OF(obj1));
  GetNArray(obj2,a2);

  p1  = a1->ptr;
  p2  = a2->ptr;
  sz  = na_sizeof[a1->type];
  get = SetFuncs[NA_ROBJ][a1->type];
  set = SetFuncs[a1->type][NA_ROBJ];

  for ( i=a1->total; i-->0; ) {
    (*get)( 1, &v, 0, p1, 0 );
    v = rb_yield(v);
    (*set)( 1, p2, 0, &v, 0 );
    p1 += sz;
    p2 += sz;
  }
  return obj2;
}

#collect! ⇒ Object Also known as: map!

iterator: collect!()



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# File 'ext/numru/narray/narray.c', line 1198

static VALUE
 na_collect_bang(VALUE self)
{
  na_shape_t i;
  int sz;
  VALUE v;
  struct NARRAY *a1;
  char *p1;
  void (*get)(), (*set)();

  GetNArray(self,a1);

  p1  = a1->ptr;
  sz  = na_sizeof[a1->type];
  get = SetFuncs[NA_ROBJ][a1->type];
  set = SetFuncs[a1->type][NA_ROBJ];

  for ( i=a1->total; i-->0; ) {
    (*get)( 1, &v, 0, p1, 0 );
    v = rb_yield(v);
    (*set)( 1, p1, 0, &v, 0 );
    p1 += sz;
  }
  return self;
}

#complex? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/numru/narray_ext.rb', line 31

def complex?
  self.typecode==NumRu::NArray::DCOMPLEX ||
  self.typecode==NumRu::NArray::SCOMPLEX
end

#conj ⇒ Object Also known as: conjugate

method: self.conj



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# File 'ext/numru/narray/na_func.c', line 863

static VALUE na_conj(VALUE self)
{ return na_unary_func( self, na_no_cast, ConjFuncs ); }

#conj! ⇒ Object Also known as: conjugate!

method: self.conj!



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# File 'ext/numru/narray/na_func.c', line 814

static VALUE na_conj_bang(VALUE self)
{ return na_set_func( self, self, ConjFuncs ); }

#count_false ⇒ Integer

Returns the number of false (zero-value) in narray

Returns:

  • (Integer) 


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# File 'ext/numru/narray/na_index.c', line 571

VALUE
 na_count_false(VALUE self)
{
  return( SHAPE2NUM(na_count_false_body(self)) );
}

#count_true ⇒ Integer

Returns the number of true (non-zero) in narray

Returns:

  • (Integer) 


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# File 'ext/numru/narray/na_index.c', line 538

VALUE
 na_count_true(VALUE self)
{
  return( SHAPE2NUM(na_count_true_body(self)) );
}

#cumprod ⇒ Object

cumprod



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# File 'ext/numru/narray/na_func.c', line 1411

static VALUE
  na_cumprod(VALUE self)
{
  return na_cumprod_bang(na_clone(self));
}

#cumprod! ⇒ Object

cumprod!

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-> [1 3 6 10 15]



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# File 'ext/numru/narray/na_func.c', line 1391

static VALUE
  na_cumprod_bang(VALUE self)
{
  struct NARRAY *a;
  int step;

  GetNArray(self,a);

  if ( a->rank != 1 )
    rb_raise( rb_eTypeError, "only for 1-dimensional array" );
  if ( a->total < 2 )
    return self; /* do nothing */

  step = na_sizeof[a->type];
  MulUFuncs[a->type](a->total-1, a->ptr+step,step, a->ptr,step);

  return self;
}

#cumsum ⇒ Object

cumsum



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# File 'ext/numru/narray/na_func.c', line 1381

static VALUE
  na_cumsum(VALUE self)
{
  return na_cumsum_bang(na_clone(self));
}

#cumsum! ⇒ Object

cumsum!

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-> [1 3 6 10 15]



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# File 'ext/numru/narray/na_func.c', line 1361

static VALUE
  na_cumsum_bang(VALUE self)
{
  struct NARRAY *a;
  int step;

  GetNArray(self,a);

  if ( a->rank != 1 )
    rb_raise( rb_eTypeError, "only for 1-dimensional array" );
  if ( a->total < 2 )
    return self; /* do nothing */

  step = na_sizeof[a->type];
  AddUFuncs[a->type](a->total-1, a->ptr+step,step, a->ptr,step);

  return self;
}

#delete_at(*args) ⇒ Object

delete rows/columns



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# File 'lib/numru/narray_ext.rb', line 90

def delete_at(*args)
  if args.size > self.rank
    raise ArgumentError, "too many arguments"
  end
  shp = self.shape
  ind = []
  self.rank.times do |i|
    n = shp[i]
    case a=args[i]
    when Integer
      a = n+a if a<0
      raise IndexError, "index(%d) out of range"%[a] if a<0
      x = [0...a,a+1...n]
    when Range
      b = a.first
      b = n+b if b<0
      raise IndexError, "index(%s) out of range"%[a] if b<0
      e = a.last
      e = n+e if e<0
      e -= 1 if a.exclude_end?
      raise IndexError, "index(%s) out of range"%[a] if e<0
      x = [0...b,e+1...n]
    when Array
      x = (0...n).to_a
      x -= a.map do |j|
        raise IndexError, "contains non-integer" unless Integer===j
        (j<0) ? n+j : j
      end
    else
      if a
        raise ArgumentError, "invalid argument"
      else
        x = true
      end
    end
    ind << x
  end
  self[*ind]
end

#div!(obj2) ⇒ Object

method: self.div!(other)



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# File 'ext/numru/narray/na_func.c', line 802

static VALUE na_div_bang(VALUE obj1, VALUE obj2)
{ return na_set_func( obj1, obj2, DivUFuncs ); }

#each ⇒ Object

iterator: each()



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# File 'ext/numru/narray/narray.c', line 1140

static VALUE
 na_each(VALUE obj)
{
  na_shape_t i;
  int sz;
  VALUE v;
  struct NARRAY *ary;
  char *p;
  void (*func)();

  GetNArray(obj,ary);

  p  = ary->ptr;
  sz = na_sizeof[ary->type];
  func = SetFuncs[NA_ROBJ][ary->type];

  for ( i=ary->total; i-->0; ) {
    (*func)( 1, &v, 0, p, 0 );
    rb_yield(v);
    p += sz;
  }
  return Qnil;
}

#element_size ⇒ Object

method: element_size – returns the element size of the array type



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# File 'ext/numru/narray/narray.c', line 590

static VALUE
 na_element_size(VALUE self)
{
  struct NARRAY *ary;
  GetNArray(self,ary);
  return INT2FIX(na_sizeof[ary->type]);
}

#empty? ⇒ Boolean

method: empty? – returns true if empty array

Returns:

  • (Boolean) 


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# File 'ext/numru/narray/narray.c', line 600

static VALUE
 na_is_empty(VALUE self)
{
  struct NARRAY *ary;
  GetNArray(self,ary);
  if (ary->total==0) return Qtrue;
  return Qfalse;
}

#eq(obj2) ⇒ Object

method: self.eq(other)



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# File 'ext/numru/narray/na_func.c', line 908

static VALUE
 na_equal(VALUE obj1, VALUE obj2)
{
  return na_compare_func( obj1, obj2, EqlFuncs );
}

#eql?(other) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/numru/narray_ext.rb', line 54

def eql?(other)
  self.class == other.class &&
    typecode == other.typecode &&
    shape == other.shape &&
    case typecode
    when NumRu::NArray::OBJECT
	to_a.eql? other.to_a
    else
	to_s.eql? other.to_s
    end
end

#fill!(val) ⇒ Object Also known as: fill

method: fill!(val)



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# File 'ext/numru/narray/narray.c', line 1040

VALUE na_fill(VALUE self, volatile VALUE val)
{
  struct NARRAY *a1, *a2;

  GetNArray(self,a1);
  val = na_cast_unless_narray(val,a1->type);
  GetNArray(val,a2);

  if (a2->total != 1)
    rb_raise(rb_eArgError, "single-element argument required");

  SetFuncs[a1->type][a2->type]( a1->total,
				a1->ptr, na_sizeof[a1->type],
				a2->ptr, 0 );
  return self;
}

#flatten ⇒ Object

method: flatten



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# File 'ext/numru/narray/narray.c', line 965

static VALUE
 na_flatten_ref(VALUE self)
{
  return na_flatten_bang( na_wrap_struct( na_ref_alloc_struct(self), self ));
}

#flatten! ⇒ Object

method: flatten!



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# File 'ext/numru/narray/narray.c', line 950

static VALUE
 na_flatten_bang(VALUE self)
{
  struct NARRAY *ary;

  GetNArray(self,ary);
  if (ary->total==0 || ary->rank==0)
    rb_raise(rb_eRuntimeError, "cannot reshape empty array");
  ary->shape[0] = ary->total;
  ary->rank = 1;
  return self;
}

#floor ⇒ Object

method: self.floor



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# File 'ext/numru/narray/na_func.c', line 867

static VALUE na_floor(VALUE self)
{ return na_unary_func( self, na_cast_round, FloorFuncs ); }

#ge(obj2) ⇒ Object Also known as: >=

method: self >= other



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# File 'ext/numru/narray/na_func.c', line 950

static VALUE
 na_greater_equal(VALUE obj1, VALUE obj2)
{
  VALUE obj;
  na_shape_t i;  char *p;
  struct NARRAY *a;

  obj = na_compare_func( obj1, obj2, CmpFuncs );
  GetNArray(obj,a);
  p = a->ptr;
  for( i=a->total; i-->0; ) {
    if (*p==1 || *p==0) *p=1;
    else *p=0;
    ++p;
  }
  return obj;
}

#gt(obj2) ⇒ Object Also known as: >

method: self > other



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# File 'ext/numru/narray/na_func.c', line 933

static VALUE
 na_greater_than(VALUE self, VALUE obj2)
{
  na_shape_t i;  char *p;
  struct NARRAY *a;

  self = na_compare_func( self, obj2, CmpFuncs );
  GetNArray(self,a);
  p = a->ptr;
  for( i=a->total; i-->0; ) {
    if (*p!=1) *p=0;
    ++p;
  }
  return self;
}

#hash ⇒ Object 



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# File 'lib/numru/narray_ext.rb', line 66

def hash
  case typecode
  when NumRu::NArray::OBJECT
    [self.class, to_a].hash
  else
    [self.class, typecode, shape, to_s].hash
  end
end

#hton ⇒ Object Also known as: ntoh

method: self.hton , self.ntoh



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# File 'ext/numru/narray/na_func.c', line 823

static VALUE na_hton(VALUE self)
{ return na_unary_func( self, na_no_cast, H2NFuncs ); }

#htov ⇒ Object Also known as: vtoh

method: self.htov , self.vtoh



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# File 'ext/numru/narray/na_func.c', line 827

static VALUE na_htov(VALUE self)
{ return na_unary_func( self, na_no_cast, H2VFuncs ); }

#im ⇒ Object

method: self.im



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# File 'ext/numru/narray/na_func.c', line 859

static VALUE na_imag_mul(VALUE self)
{ return na_unary_func( self, na_cast_comp, ImagMulFuncs ); }

#imag ⇒ Object Also known as: image

method: self.imag



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# File 'ext/numru/narray/na_func.c', line 851

static VALUE na_imag(VALUE self)
{ return na_unary_func( self, na_cast_real, ImagFuncs ); }

#imag=(obj2) ⇒ Object 



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# File 'ext/numru/narray/na_func.c', line 661

static VALUE
 na_imag_set(VALUE obj1, volatile VALUE obj2)
{
  struct NARRAY *a1;

  GetNArray(obj1,a1);
  obj2 = na_cast_object(obj2, na_cast_real[a1->type]);

  na_exec_unary( NA_STRUCT(obj1), NA_STRUCT(obj2), ImgSetFuncs[a1->type] );

  return obj1;
}

#indgen!(*args) ⇒ Object Also known as: indgen

method: indgen!([start,])



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# File 'ext/numru/narray/narray.c', line 1059

VALUE
 na_indgen(int argc, VALUE *argv, VALUE self)
{
  na_shape_t start=0, step=1;
  struct NARRAY *ary;

  if (argc>0) {
    start = NUM2SHAPE(argv[0]);
    if (argc==2)
      step = NUM2SHAPE(argv[1]);
    else
      if (argc>2)
	rb_raise(rb_eArgError, "wrong # of arguments (%d for <= 2)", argc);
  }

  GetNArray(self,ary);
  IndGenFuncs[ary->type]( ary->total,
			  ary->ptr, na_sizeof[ary->type],
			  start, step );
  return self;
}

#inspect ⇒ Object

method: inspect() – returns the inspect of the array



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# File 'ext/numru/narray/narray.c', line 836

static VALUE
 na_inspect(VALUE self)
{
  VALUE str;
  struct NARRAY *ary;
  int i;
  char buf[256];
  const char *classname;
  const char *ref = "%s(ref).%s(%zd";
  const char *org = "%s.%s(%zd";

  GetNArray(self,ary);
  classname = rb_class2name(CLASS_OF(self));

  str = rb_str_new(0,0);
  if (ary->rank < 1) {
    sprintf(buf, "%s.%s(): []", classname, na_typestring[ary->type]);
    rb_str_cat(str,buf,strlen(buf));
  }
  else {
    sprintf(buf, (ary->ref==Qnil) ? org:ref,
	    classname, na_typestring[ary->type], ary->shape[0]);
    rb_str_cat(str,buf,strlen(buf));
    for (i=1; i<ary->rank; ++i) {
      sprintf(buf,",%zd",ary->shape[i]);
      rb_str_cat(str,buf,strlen(buf));
    }
    rb_str_cat(str,")",1);
    rb_str_cat(str,": \n",3);
    rb_str_concat(str, na_make_inspect(self));
  }
  return str;
}

#integer? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/numru/narray_ext.rb', line 26

def integer?
  self.typecode==NumRu::NArray::BYTE ||
  self.typecode==NumRu::NArray::SINT ||
  self.typecode==NumRu::NArray::LINT
end

#le(obj2) ⇒ Object Also known as: <=

method: self <= other



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# File 'ext/numru/narray/na_func.c', line 988

static VALUE
 na_less_equal(VALUE obj1, VALUE obj2)
{
  VALUE obj;
  na_shape_t i;  char *p;
  struct NARRAY *a;

  obj = na_compare_func( obj1, obj2, CmpFuncs );
  GetNArray(obj,a);
  p = a->ptr;
  for( i=a->total; i-->0; ) {
    if (*p==2 || *p==0) *p=1;
    else *p=0;
    ++p;
  }
  return obj;
}

#lt(obj2) ⇒ Object Also known as: <

method: self < other



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# File 'ext/numru/narray/na_func.c', line 969

static VALUE
 na_less_than(VALUE obj1, VALUE obj2)
{
  VALUE obj;
  na_shape_t i;  char *p;
  struct NARRAY *a;

  obj = na_compare_func( obj1, obj2, CmpFuncs );
  GetNArray(obj,a);
  p = a->ptr;
  for( i=a->total; i-->0; ) {
    if (*p==2) *p=1;
    else *p=0;
    ++p;
  }
  return obj;
}

#mask(mask) ⇒ Object

:nodoc:



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# File 'ext/numru/narray/na_index.c', line 578

VALUE
 na_aref_mask(VALUE self, VALUE mask)
{
  na_shape_t total;
  int i;
  struct NARRAY *a1, *am, *a2;
  VALUE v;

  GetNArray( self, a1 );
  GetNArray( mask, am );

  if (a1->total != am->total)
    rb_raise(rb_eTypeError,"self.size(=%zd) != mask.size(=%zd)",
	     a1->total, am->total);
  if (a1->rank != am->rank) 
    rb_raise(rb_eTypeError,"self.rank(=%i) != mask.rank(=%i)",
	     a1->rank, am->rank);
  for (i=0; i<a1->rank; ++i)
    if (a1->shape[i] != am->shape[i])
      rb_raise(rb_eTypeError,"self.shape[%i](=%zd) != mask.shape[%i](=%zd)",
	       i, a1->shape[i], i, am->shape[i]);

  total = na_count_true_body(mask);

  v = na_make_object( a1->type, 1, &total, CLASS_OF(self) );
  GetNArray(v,a2);

  RefMaskFuncs[a1->type]
    ( a1->total, a2->ptr, na_sizeof[a2->type], a1->ptr,
      na_sizeof[a1->type], am->ptr, (na_shape_t)1 );

  return(v);
}

#max(*args) ⇒ Object

method: max( rank, … )



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# File 'ext/numru/narray/na_func.c', line 1488

static VALUE
 na_max(int argc, VALUE *argv, VALUE self)
{ return na_minmax_func(argc,argv,self,MaxFuncs); }

#mean(*ranks) ⇒ Object

Statistics



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# File 'lib/numru/narray_ext.rb', line 131

def mean(*ranks)
  if integer?
    a = self.to_type(NumRu::NArray::DFLOAT)
  else
    a = self
  end
  a = NumRu::NArray.ref(a)
  a.sum(*ranks) / (rank_total(*ranks))
end

#median(rank = nil) ⇒ Object 



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# File 'lib/numru/narray_ext.rb', line 186

def median(rank=nil)
  shape = self.shape
  rank = shape.size-1 if rank==nil
  s = sort(rank).reshape!(true,*shape[rank+1..-1])
  n = s.shape[0]
  if n%2==1
    s[n/2,false]
  else
    s[n/2-1..n/2,false].sum(0)/2
  end
end

#min(*args) ⇒ Object

method: min( rank, … )



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# File 'ext/numru/narray/na_func.c', line 1483

static VALUE
 na_min(int argc, VALUE *argv, VALUE self)
{ return na_minmax_func(argc,argv,self,MinFuncs); }

#mod!(obj2) ⇒ Object

method: self.mod!(other)



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# File 'ext/numru/narray/na_func.c', line 810

static VALUE na_mod_bang(VALUE obj1, VALUE obj2)
{ return na_set_func( obj1, obj2, ModUFuncs ); }

#mul!(obj2) ⇒ Object

method: self.mul!(other)



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# File 'ext/numru/narray/na_func.c', line 806

static VALUE na_mul_bang(VALUE obj1, VALUE obj2)
{ return na_set_func( obj1, obj2, MulUFuncs ); }

#mul_accum(*args) ⇒ Object

method: mul_accum( other, rank, … )



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# File 'ext/numru/narray/na_func.c', line 1340

static VALUE
 na_mul_accum(int argc, VALUE *argv, VALUE self)
{
  if (argc<2)
    rb_raise(rb_eArgError, "wrong # of arguments (%d for >=2)", argc);
  return na_mul_add_body(argc-1,argv+1,self,argv[0],Qnil,1);
}

#mul_add(*args) ⇒ Object

method: mul_add( other, rank, … )



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# File 'ext/numru/narray/na_func.c', line 1331

static VALUE
 na_mul_add(int argc, VALUE *argv, VALUE self)
{
  if (argc<2)
    rb_raise(rb_eArgError, "wrong # of arguments (%d for >=2)", argc);
  return na_mul_add_body(argc-1,argv+1,self,argv[0],Qnil,0);
}

#ne(obj2) ⇒ Object

method: self.ne(other)



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# File 'ext/numru/narray/na_func.c', line 915

static VALUE
 na_not_equal(VALUE obj1, VALUE obj2)
{
  VALUE obj;
  na_shape_t i;  char *p;
  struct NARRAY *a;

  obj = na_compare_func( obj1, obj2, EqlFuncs );
  GetNArray(obj,a);
  p = a->ptr;
  for( i=a->total; i-->0; ) {
    *p = *p==0 ? 1 : 0;
    ++p;
  }
  return obj;
}

#newdim(*args) ⇒ Object Also known as: newrank

method: newdim(size1,size2,…,sizeN)



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# File 'ext/numru/narray/narray.c', line 1027

VALUE
 na_newdim_ref(int argc, VALUE *argv, VALUE self)
{
  struct NARRAY *ary;

  GetNArray(self,ary);
  ary = na_ref_alloc_struct(self);
  na_newdim(argc, argv, ary);
  return na_wrap_struct(ary,self);
}

#newdim!(*args) ⇒ Object Also known as: newdim=, newrank!, newrank=

method: newdim!(size1,size2,…,sizeN)



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# File 'ext/numru/narray/narray.c', line 1015

static VALUE
 na_newdim_bang(int argc, VALUE *argv, VALUE self)
{
  struct NARRAY *ary;

  GetNArray(self,ary);
  na_newdim(argc, argv, ary);
  return self;
}

#none? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/numru/narray_ext.rb', line 44

def none?
  where.size == 0
end

#not ⇒ Object

method: self.not



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# File 'ext/numru/narray/na_func.c', line 879

static VALUE na_not(VALUE self)
{ return na_unary_func( self, na_cast_byte, NotFuncs ); }

#or(obj2) ⇒ Object

method: self.or other



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# File 'ext/numru/narray/na_func.c', line 889

static VALUE
 na_cond_or(VALUE obj1, VALUE obj2)
{ return na_compare_func( obj1, obj2, Or_Funcs ); }

#original ⇒ Object

method: self.original



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# File 'ext/numru/narray/narray.c', line 325

static VALUE
 na_original(VALUE self)
{
  struct NARRAY *ary;

  GetNArray(self,ary);
  return ary->ref;
}

#prod(*args) ⇒ Object

method: prod( rank, … )



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# File 'ext/numru/narray/na_func.c', line 1273

static VALUE
 na_prod(int argc, VALUE *argv, VALUE self)
{ return na_prod_body(argc,argv,self,0); }

#random(*args) ⇒ Object 



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# File 'ext/numru/narray/na_random.c', line 432

static VALUE
 na_random(int argc, VALUE *argv, VALUE self)
{
  return na_random_bang(argc, argv, na_clone(self));
}

#random!(*args) ⇒ Object 



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# File 'ext/numru/narray/na_random.c', line 405

static VALUE
 na_random_bang(int argc, VALUE *argv, VALUE self)
{
  VALUE  vmax;
  struct NARRAY *ary;
  double rmax;

  rb_scan_args(argc, argv, "01", &vmax);
  if (first) {
    rand_init(random_seed());
  }
  if (NIL_P(vmax)) {
    rmax = 1;
  } else {
    rmax = NUM2DBL(vmax);
  }
  if (isinf(rmax) || isnan(rmax)) {
    rb_raise(rb_eArgError, "rand-max must be regular value");
  }

  GetNArray(self,ary);

  (*RndFuncs[ary->type])( ary->total, ary->ptr, na_sizeof[ary->type], rmax );

  return self;
}

#randomn ⇒ Object

Normal distributed random number; valid for floating point types



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# File 'lib/numru/narray_ext.rb', line 200

def randomn
  size = self.size
  case type = self.typecode
  when COMPLEX; type=FLOAT
  when SCOMPLEX; type=SFLOAT
  when FLOAT
  when SFLOAT
  else
    raise TypeError, "NumRu::NArray type must be (S)FLOAT or (S)COMPLEX."
  end
  rr = NumRu::NArray.new(type,size)
  xx = NumRu::NArray.new(type,size)
  i = 0
  while i < size
    n = size-i
    m = ((n+Math::sqrt(n))*1.27).to_i
    x = NumRu::NArray.new(type,m).random!(1) * 2 - 1
    y = NumRu::NArray.new(type,m).random!(1) * 2 - 1
    r = x**2 + y**2
    idx = (r<1).where
    idx = idx[0...n] if idx.size > n
    if idx.size>0
	rr[i] = r[idx]
	xx[i] = x[idx]
	i += idx.size
    end
  end
  # Box-Muller transform
  rr = ( xx * NumRu::NMath::sqrt( -2 * NumRu::NMath::log(rr) / rr ) )
  # finish
  rr.reshape!(*self.shape) if self.rank > 1
  rr = rr.to_type(self.typecode) if type!=self.typecode
  if RUBY_VERSION < "1.8.0"
    self.type.refer(rr)
  else
    self.class.refer(rr)
  end
end

#randomn! ⇒ Object

alias randomn! randomn



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# File 'lib/numru/narray_ext.rb', line 240

def randomn!
  self[]= randomn
  self
end

#rank ⇒ Object Also known as: dim, dimension

method: rank() – returns the rank of the array



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# File 'ext/numru/narray/narray.c', line 560

static VALUE
 na_rank(VALUE self)
{
  struct NARRAY *ary;
  GetNArray(self,ary);
  return INT2FIX(ary->rank);
}

#rank_total(*ranks) ⇒ Object 



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# File 'lib/numru/narray_ext.rb', line 75

def rank_total(*ranks)
  if ranks.size>0
    idx = []
    ranks.each{|i| idx.push(*i)}
    # ranks is expected to be, e.g., [1, 3..5, 7]
    a = self.shape
    n = 1
    idx.each{|i| n *= a[i]}
    n
  else
    self.total
  end
end

#real ⇒ Object

method: self.real



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# File 'ext/numru/narray/na_func.c', line 847

static VALUE na_real(VALUE self)
{ return na_unary_func( self, na_cast_real, RealFuncs ); }

#recip ⇒ Object

method: self.recip



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# File 'ext/numru/narray/na_func.c', line 839

static VALUE na_recip(VALUE self)
{ return na_unary_func( self, na_no_cast, RcpFuncs ); }

#refer ⇒ Object

method: self.refer



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# File 'ext/numru/narray/narray.c', line 311

static VALUE
 na_refer(VALUE self)
{
  return na_wrap_struct(na_ref_alloc_struct(self), self);
}

#reshape(*args) ⇒ Object

method: reshape(size1,size2,…,sizeN)



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# File 'ext/numru/narray/narray.c', line 937

static VALUE
 na_reshape_ref(int argc, VALUE *argv, VALUE self)
{
  struct NARRAY *ary;

  GetNArray(self,ary);
  ary = na_ref_alloc_struct(self);
  na_reshape(argc, argv, ary, self);
  return na_wrap_struct(ary,self);
}

#reshape!(*args) ⇒ Object Also known as: shape=

method: reshape!(size1,size2,…,sizeN)



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# File 'ext/numru/narray/narray.c', line 925

static VALUE
 na_reshape_bang(int argc, VALUE *argv, VALUE self)
{
  struct NARRAY *ary;

  GetNArray(self,ary);
  na_reshape(argc, argv, ary, self);
  return self;
}

#reverse(*ranks) ⇒ Object 



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# File 'lib/numru/narray_ext.rb', line 245

def reverse(*ranks)
  if self.rank==0
    return self.dup
  elsif ranks.size==0
    idx = (0...self.rank).map{-1..0}
  else
    idx = [true]*self.rank
    ranks.each do |i|
      if !i.kind_of?(Integer)
        raise ArgumentError, "Argument must be Integer"
      end
      if i >= self.rank
        raise ArgumentError, "dimension(%s) out of range"%[i]
      end
      idx[i] = -1..0
    end
  end
  self[*idx]
end

#rms(*ranks) ⇒ Object 



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# File 'lib/numru/narray_ext.rb', line 156

def rms(*ranks)
  if integer?
    a = self.to_type(NumRu::NArray::DFLOAT)
  else
    a = self
  end
  a = NumRu::NArray.ref(a)
  n = rank_total(*ranks)
  if complex?
    NumRu::NMath::sqrt( (a.abs**2).sum(*ranks)/n )
  else
    NumRu::NMath::sqrt( (a**2).sum(*ranks)/n )
  end
end

#rmsdev(*ranks) ⇒ Object 



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# File 'lib/numru/narray_ext.rb', line 171

def rmsdev(*ranks)
  if integer?
    a = self.to_type(NumRu::NArray::DFLOAT)
  else
    a = self
  end
  a = NumRu::NArray.ref(a)
  n = rank_total(*ranks)
  if complex?
    NumRu::NMath::sqrt( (( a-a.accum(*ranks).div!(n) ).abs**2).sum(*ranks)/n )
  else
    NumRu::NMath::sqrt( (( a-a.accum(*ranks).div!(n) )**2).sum(*ranks)/n )
  end
end

#rot90(n_times = 1) ⇒ Object 



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# File 'lib/numru/narray_ext.rb', line 265

def rot90(n_times=1)
  if self.rank < 2
    raise "must be >= 2 dimensional array"
  end
  case n_times%4
  when 0
    self.dup
  when 1
    self.transpose(1,0).reverse(0)
  when 2
    self.reverse(0,1)
  when 3
    self.transpose(1,0).reverse(1)
  end
end

#round ⇒ Object

method: self.round



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# File 'ext/numru/narray/na_func.c', line 875

static VALUE na_round(VALUE self)
{ return na_unary_func( self, na_cast_round, RoundFuncs ); }

#sbt!(obj2) ⇒ Object

method: self.sbt!(other)



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# File 'ext/numru/narray/na_func.c', line 798

static VALUE na_sbt_bang(VALUE obj1, VALUE obj2)
{ return na_set_func( obj1, obj2, SbtUFuncs ); }

#shape ⇒ Object Also known as: sizes

method: shape() – returns an array of shape of each rank



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# File 'ext/numru/narray/narray.c', line 544

static VALUE
 na_shape(VALUE self)
{
  struct NARRAY *ary;
  VALUE *shape;
  int i;

  GetNArray(self,ary);
  shape = ALLOCA_N(VALUE,ary->rank);
  for (i = 0; i < ary->rank; ++i)
    shape[i] = INT2FIX(ary->shape[i]);
  return rb_ary_new4(ary->rank,shape);
}

#size ⇒ Object Also known as: total, length

method: size() – returns the total number of elements



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# File 'ext/numru/narray/narray.c', line 570

static VALUE
 na_size(VALUE self)
{
  struct NARRAY *ary;
  GetNArray(self,ary);
  return INT2FIX(ary->total);
}

#slice(*args) ⇒ Object

method: slice(idx1,idx2,…,idxN)



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# File 'ext/numru/narray/na_index.c', line 643

VALUE na_slice(int argc, VALUE *argv, VALUE self)
{ return na_aref_body(argc, argv, self, 1); }

#sort(*args) ⇒ Object

method: sort()



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# File 'ext/numru/narray/na_func.c', line 1517

static VALUE
 na_sort(int argc, VALUE *argv, VALUE self)
{
  struct NARRAY *a1, *a2;
  VALUE obj;
  int  (*func)(const void*, const void*);
  na_shape_t   i, size, step, nloop, nsort;
  char *ptr;

  GetNArray(self,a1);

  nsort = na_sort_number(argc,argv,a1);
  nloop = a1->total/nsort;

  obj = na_make_object(a1->type,a1->rank,a1->shape,CLASS_OF(self));
  GetNArray(obj,a2);
  memcpy(a2->ptr, a1->ptr, a1->total*na_sizeof[a1->type]);
  func = SortFuncs[a2->type];
  size = na_sizeof[a2->type];
  ptr  = a2->ptr;
  step = size * nsort;

  for (i=0; i<nloop; ++i) {
    qsort( ptr, nsort, size, func );
    ptr += step;
  }
  return obj;
}

#sort!(*args) ⇒ Object

method: sort!()



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# File 'ext/numru/narray/na_func.c', line 1548

static VALUE
 na_sort_bang(int argc, VALUE *argv, VALUE self)
{
  struct NARRAY *a1;
  int  (*func)(const void*, const void*);
  na_shape_t   i, size, step, nloop, nsort;
  char *ptr;

  GetNArray(self,a1);

  nsort = na_sort_number(argc,argv,a1);
  nloop = a1->total/nsort;

  func = SortFuncs[a1->type];
  size = na_sizeof[a1->type];
  ptr  = a1->ptr;
  step = size * nsort;

  for (i=0; i<nloop; ++i) {
    qsort( ptr, nsort, size, func );
    ptr += step;
  }
  return self;
}

#sort_index(*args) ⇒ Object

method: sort_index()



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# File 'ext/numru/narray/na_func.c', line 1575

static VALUE
 na_sort_index(int argc, VALUE *argv, VALUE self)
{
  struct NARRAY *a1, *a2;
  VALUE obj;
  int  (*func)(const void*, const void*);
  na_shape_t  i, size, nloop, nsort;
  char **ptr_ptr, **ptr_p;
  char  *ptr_ary,  *ptr_a;

  GetNArray(self,a1);

  nsort = na_sort_number(argc,argv,a1);
  nloop = a1->total/nsort;

  size = na_sizeof[a1->type];
  ptr_p = ptr_ptr = ALLOC_N(char*, a1->total);
  ptr_a = ptr_ary = a1->ptr;

  for (i=a1->total; i>0; --i) {
    *(ptr_p++) = ptr_a;
    ptr_a += size;
  }

  func = SortIdxFuncs[a1->type];
  ptr_p = ptr_ptr;

  for (i=0; i<nloop; ++i) {
    qsort( ptr_p, nsort, sizeof(char*), func );
    ptr_p += nsort;
  }

  obj = na_make_object(NA_SIZE,a1->rank,a1->shape,CLASS_OF(self));
  GetNArray(obj,a2);
  ptr_p = ptr_ptr;
  if ( NA_SIZE == NA_LINT ) {
    int32_t *ptr_i;
    ptr_i = (int32_t*)(a2->ptr);
    for (i=a2->total; i>0; --i) {
      *(ptr_i++) = (int32_t)(*(ptr_p++)-ptr_ary)/size;
    }
  } else if ( NA_SIZE == NA_LLINT ) {
    int64_t *ptr_i;
    ptr_i = (int64_t*)(a2->ptr);
    for (i=a2->total; i>0; --i) {
      *(ptr_i++) = (int64_t)(*(ptr_p++)-ptr_ary)/size;
    }
  }
  xfree(ptr_ptr);
  return obj;
}

#stddev(*ranks) ⇒ Object 



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# File 'lib/numru/narray_ext.rb', line 141

def stddev(*ranks)
  if integer?
    a = self.to_type(NumRu::NArray::DFLOAT)
  else
    a = self
  end
  a = NumRu::NArray.ref(a)
  n = rank_total(*ranks)
  if complex?
    NumRu::NMath::sqrt( (( a-a.accum(*ranks).div!(n) ).abs**2).sum(*ranks)/(n-1) )
  else
    NumRu::NMath::sqrt( (( a-a.accum(*ranks).div!(n) )**2).sum(*ranks)/(n-1) )
  end
end

#sum(*args) ⇒ Object

method: sum( rank, … )



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# File 'ext/numru/narray/na_func.c', line 1224

static VALUE
 na_sum(int argc, VALUE *argv, VALUE self)
{ return na_sum_body(argc,argv,self,0); }

#swap_byte ⇒ Object

method: self.swap_byte



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# File 'ext/numru/narray/na_func.c', line 819

static VALUE na_swap_byte(VALUE self)
{ return na_unary_func( self, na_no_cast, SwpFuncs ); }

#to_a ⇒ Object

method: to_a – convert itself to Array



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# File 'ext/numru/narray/na_array.c', line 549

VALUE
 na_to_array(VALUE obj)
{
  struct NARRAY *na;
  na_shape_t *idx;
  int i;

  GetNArray(obj,na);

  if (na->rank<1)
    return rb_ary_new();

  idx = ALLOCA_N(na_shape_t,na->rank);
  for (i = 0; i<na->rank; ++i) idx[i] = 0;
  return na_to_array0(na,idx,na->rank-1,SetFuncs[NA_ROBJ][na->type]);
}

#to_binary ⇒ Object

method: to_binary – convert the data contents to a BYTE type NArray



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# File 'ext/numru/narray/narray.c', line 697

static VALUE
 na_to_binary(VALUE self)
{
  struct NARRAY *a1, *a2;
  int i, rank;
  na_shape_t *shape;
  VALUE v;

  GetNArray(self,a1);

  rank = a1->rank+1;
  shape = ALLOCA_N(na_shape_t,rank);
  shape[0] = na_sizeof[a1->type];
  for (i=1; i<rank; ++i)
    shape[i] = a1->shape[i-1];

  v = na_make_object( NA_BYTE, rank, shape, cNArray );
  GetNArray(v,a2);
  MEMCPY(a2->ptr,a1->ptr,char,a2->total);

  return v;
}

#to_f ⇒ Object

method: to_f()



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# File 'ext/numru/narray/narray.c', line 507

static VALUE
 na_to_float(VALUE self)
{
  struct NARRAY *a1, *a2;
  VALUE v;

  GetNArray(self,a1);

  v = na_make_object(na_upcast[NA_SFLOAT][a1->type], a1->rank, a1->shape,
		     CLASS_OF(self));
  GetNArray(v,a2);
  na_copy_nary(a2,a1);
  return v;
}

#to_i ⇒ Object

method: to_i()



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# File 'ext/numru/narray/narray.c', line 524

static VALUE
 na_to_integer(VALUE self)
{
  int type;
  struct NARRAY *a1, *a2;
  VALUE v;

  GetNArray(self,a1);
  if (!NA_IsINTEGER(a1))
    type = NA_LINT;
  else
    type = a1->type;
  v = na_make_object(type, a1->rank, a1->shape, CLASS_OF(self));
  GetNArray(v,a2);
  na_copy_nary(a2,a1);
  return v;
}

#to_s ⇒ Object

method: to_s – convert the data contents to a binary string



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# File 'ext/numru/narray/narray.c', line 651

static VALUE
 na_to_s(VALUE self)
{
  struct NARRAY *ary;
  GetNArray(self,ary);
  if (NA_IsROBJ(ary))
    rb_raise(rb_eTypeError,"cannot convert object-type NArray");
  return rb_str_new(ary->ptr,ary->total*na_sizeof[ary->type]);
}

#to_s_refer ⇒ Object

method: to_s_refer – convert the data contents to a binary string (not dup data)



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# File 'ext/numru/narray/narray.c', line 662

static VALUE
 na_to_s_refer(VALUE self)
{
  struct NARRAY *ary;
  VALUE str;
  GetNArray(self,ary);
  if (NA_IsROBJ(ary))
    rb_raise(rb_eTypeError,"cannot convert object-type NArray");
#if RUBY_API_VERSION_CODE >= 20200
  str = rb_str_new_static(ary->ptr,ary->total*na_sizeof[ary->type]);
  RB_OBJ_WRITE(str, &RSTRING(str)->as.heap.aux.shared, self);
  FL_SET(str, ELTS_SHARED);
#elif RUBY_API_VERSION_CODE >= 10900
  {
  NEWOBJ(rstr, struct RString);
  str = (VALUE)rstr;
  }
  OBJSETUP(str, rb_cString, T_STRING);
  FL_SET(str, FL_USER1);
  RBASIC(str)->flags &= ~RSTRING_EMBED_LEN_MASK;
  RBASIC(str)->flags |= (0L << RSTRING_EMBED_LEN_SHIFT);
  RSTRING(str)->as.heap.len = ary->total*na_sizeof[ary->type];
  RSTRING(str)->as.heap.ptr = ary->ptr;
  RSTRING(str)->as.heap.aux.capa = RSTRING(str)->as.heap.len;
  RSTRING(str)->as.heap.aux.shared = self;
  FL_SET(str, ELTS_SHARED);
#else
  str = rb_str_new(ary->ptr,ary->total*na_sizeof[ary->type]);
  rb_warn("#to_s is used for #to_s_refer for ruby < 1.9 (%d.%d.%d)", RUBY_API_VERSION_MAJOR, RUBY_API_VERSION_MINOR, RUBY_API_VERSION_TEENY);
#endif
  return rb_obj_freeze(str);
}

#to_string ⇒ Object

method: to_string



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# File 'ext/numru/narray/narray.c', line 757

static VALUE
 na_to_string(VALUE self)
{
  VALUE v;
  struct NARRAY *a1, *a2;

  GetNArray(self,a1);

  if (a1->total==0)
    v = na_make_empty(NA_ROBJ, CLASS_OF(self));
  else
  if (a1->type==NA_BYTE) {
    if (a1->rank==1)
      return rb_str_new(a1->ptr,a1->shape[0]);
    v  = na_make_object(NA_ROBJ, a1->rank-1, a1->shape+1, cNArray);
    GetNArray(v,a2);
    na_to_string_binary( a2->total,
			 a2->ptr, sizeof(VALUE),
			 a1->ptr, a1->shape[0] );
  } else {
    v = na_make_object(NA_ROBJ, a1->rank, a1->shape, CLASS_OF(self));
    GetNArray(v,a2);
    ToStrFuncs[a1->type]( a2->total,
			  a2->ptr, sizeof(VALUE),
			  a1->ptr, na_sizeof[a1->type] );
  }
  return v;
}

#to_type(vtype) ⇒ Object

method: to_type(type)



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# File 'ext/numru/narray/narray.c', line 490

static VALUE
 na_to_type(VALUE self, VALUE vtype)
{
  struct NARRAY *a1, *a2;
  VALUE v;

  GetNArray(self,a1);

  v = na_make_object(na_get_typecode(vtype), a1->rank, a1->shape,
		     CLASS_OF(self));
  GetNArray(v,a2);
  na_copy_nary(a2,a1);
  return v;
}

#to_type_as_binary(vtype) ⇒ Object

method: to_type_as_binary(type)



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# File 'ext/numru/narray/narray.c', line 722

static VALUE
 na_to_type_as_binary(VALUE self, VALUE vtype)
{
  struct NARRAY *a1, *a2;
  na_shape_t size, total;
  int type;
  VALUE v;

  type = na_get_typecode(vtype);
  GetNArray(self,a1);

  size = a1->total * na_sizeof[a1->type];
  if ( size % na_sizeof[type] != 0 )
    rb_raise(rb_eRuntimeError, "bina1 size mismatch");
  total = size / na_sizeof[type];

  v = na_make_object( type, 1, &total, cNArray );
  GetNArray(v,a2);
  MEMCPY(a2->ptr,a1->ptr,char,size);

  return v;
}

#transpose(*args) ⇒ Object

method: self.transpose( … )



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# File 'ext/numru/narray/na_func.c', line 1103

static VALUE
 na_transpose(int argc, VALUE *argv, VALUE self)
{
  struct NARRAY *a2;
  int i, rankc, *rankv;
  na_shape_t *shape;
  VALUE obj;

  GetNArray(self,a2);

  /* Parse Argument */
  rankv = ALLOC_N( int, NA_MAX_RANK);
  shape = ALLOC_N( na_shape_t, NA_MAX_RANK);
  rankc = na_arg_to_rank( argc, argv, a2->rank, rankv, 1 );
  if (rankc > a2->rank)
    rb_raise(rb_eArgError, "too many args");
  for ( ;rankc<a2->rank; ++rankc)
    rankv[rankc] = rankc;

  /* Argument Check */
  MEMZERO(shape,na_shape_t,rankc);
  for (i=0; i<rankc; ++i) {
    if (shape[rankv[i]] != 0)
      rb_raise(rb_eArgError,"rank doublebooking");
    shape[rankv[i]] = 1;
  }

  for (i=0; i<a2->rank; ++i)
    shape[i] = a2->shape[rankv[i]];

  obj = na_make_object(a2->type, a2->rank, shape, CLASS_OF(self));

  na_transpose_bifunc( NA_STRUCT(obj), a2, rankv );
  xfree(rankv);
  xfree(shape);
  return obj;
}

#typecode ⇒ Object

method: typecode – returns the type of the array



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# File 'ext/numru/narray/narray.c', line 580

static VALUE
 na_typecode(VALUE self)
{
  struct NARRAY *ary;
  GetNArray(self,ary);
  return INT2FIX(ary->type);
}

#where ⇒ Object

method: where

idx_true = narray.where



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# File 'ext/numru/narray/narray.c', line 1132

static VALUE
 na_where(VALUE self)
{
  return RARRAY_PTR( na_where2(self) )[0];
}

#where2 ⇒ Object

method: where2

idx_true, idx_false = narray.where2



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# File 'ext/numru/narray/narray.c', line 1084

static VALUE
 na_where2(volatile VALUE obj)
{
  VALUE v1, v0;
  na_shape_t  n, i, n1, n0;
  char *c;
  int32_t *idx1, *idx0;
  struct NARRAY *ary, *a1, *a0; /* a1=true, a0=false */

  GetNArray(obj,ary);
  /* Convert to NA_BYTE by calling "obj.ne(0)", if needed */
  if(ary->type != NA_BYTE) {
    obj = rb_funcall(obj, na_id_ne, 1, INT2FIX(0));
    GetNArray(obj,ary);
  }
  n = ary->total;

  /* Count true */
  c = ary->ptr;
  n1 = 0;
  for (i=0; i<n; ++i)
    if (*(c++)) ++n1;

  n0 = n-n1;

  /* partially true and false */
  v1 = na_make_object( NA_LINT, 1, &n1, cNArray );
  GetNArray(v1,a1);
  idx1 = (int32_t*) a1->ptr;
  v0 = na_make_object( NA_LINT, 1, &n0, cNArray );
  GetNArray(v0,a0);
  idx0 = (int32_t*) a0->ptr;

  /* Get Indices */
  c = ary->ptr;
  for ( i=0; i<n; ++i ) {
    if (*(c++))
      *(idx1++) = i;
    else
      *(idx0++) = i;
  }

  return rb_assoc_new( v1, v0 );
}

#xor(obj2) ⇒ Object

method: self.xor other



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# File 'ext/numru/narray/na_func.c', line 894

static VALUE
 na_cond_xor(VALUE obj1, VALUE obj2)
{ return na_compare_func( obj1, obj2, XorFuncs ); }

#|(obj2) ⇒ Object

method: self | other



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# File 'ext/numru/narray/na_func.c', line 736

static VALUE na_bit_or(VALUE obj1, VALUE obj2)
{ return na_bifunc( obj1, obj2, Qnil, BOrFuncs ); }

#~ ⇒ Object

method: ~self



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# File 'ext/numru/narray/na_func.c', line 831

static VALUE na_bit_rev(VALUE self)
{ return na_unary_func( self, na_no_cast, BRvFuncs ); }