Class: NArray

Inherits:
Object
  • Object
show all
Defined in:
lib/narray_ext.rb,
ext/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]



782
783
784
785
786
787
 
# File 'ext/narray/narray.c', line 782

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)



412
413
414
 
# File 'ext/narray/narray.c', line 412

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 



11
12
13
14
15
16
17
18
19
20
21
22
23
24
 
# File 'lib/narray_ext.rb', line 11

def self.cast(array,type=nil)
  case array
  when NArray
  when Array
    array = NArray.to_na(array)
  else
    raise ArgumentError, "1st argument must be 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)



447
448
449
 
# File 'ext/narray/narray.c', line 447

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)



447
448
449
 
# File 'ext/narray/narray.c', line 447

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)



437
438
439
 
# File 'ext/narray/narray.c', line 437

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 )



786
787
788
 
# File 'ext/narray/na_func.c', line 786

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)



437
438
439
 
# File 'ext/narray/narray.c', line 437

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)



422
423
424
 
# File 'ext/narray/narray.c', line 422

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)



422
423
424
 
# File 'ext/narray/narray.c', line 422

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)



427
428
429
 
# File 'ext/narray/narray.c', line 427

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 )



781
782
783
 
# File 'ext/narray/na_func.c', line 781

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, … )



1348
1349
1350
1351
1352
1353
1354
 
# File 'ext/narray/na_func.c', line 1348

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)



403
404
405
406
407
408
409
 
# File 'ext/narray/narray.c', line 403

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)



452
453
454
 
# File 'ext/narray/narray.c', line 452

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 )



317
318
319
320
321
 
# File 'ext/narray/narray.c', line 317

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 )



317
318
319
320
321
 
# File 'ext/narray/narray.c', line 317

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)



442
443
444
 
# File 'ext/narray/narray.c', line 442

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)



432
433
434
 
# File 'ext/narray/narray.c', line 432

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)



417
418
419
 
# File 'ext/narray/narray.c', line 417

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

.srand(*args) ⇒ Object 



158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
 
# File 'ext/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 )



756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
 
# File 'ext/narray/narray.c', line 756

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 )



756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
 
# File 'ext/narray/narray.c', line 756

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



727
728
 
# File 'ext/narray/na_func.c', line 727

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

#&(obj2) ⇒ Object

method: self & other



731
732
 
# File 'ext/narray/na_func.c', line 731

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

#*(obj2) ⇒ Object

method: self * other



719
720
 
# File 'ext/narray/na_func.c', line 719

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

#**(val2) ⇒ Object 



611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
 
# File 'ext/narray/na_func.c', line 611

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



711
712
 
# File 'ext/narray/na_func.c', line 711

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

#-(obj2) ⇒ Object

method: self - other



715
716
 
# File 'ext/narray/na_func.c', line 715

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

#-@ ⇒ Object

method: -self



834
835
 
# File 'ext/narray/na_func.c', line 834

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

#/(obj2) ⇒ Object

method: self / other



723
724
 
# File 'ext/narray/na_func.c', line 723

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

#<=>(obj2) ⇒ Object

method: self <=> other



900
901
902
 
# File 'ext/narray/na_func.c', line 900

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

#==(other) ⇒ Object 



48
49
50
51
52
 
# File 'lib/narray_ext.rb', line 48

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

#[](*args) ⇒ Object

method: [](idx1,idx2,…,idxN)



639
640
 
# File 'ext/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)



980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
 
# File 'ext/narray/na_index.c', line 980

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



739
740
 
# File 'ext/narray/na_func.c', line 739

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

#abs ⇒ Object

method: self.abs



842
843
 
# File 'ext/narray/na_func.c', line 842

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

#accum(*args) ⇒ Object

method: accum( rank, … )



1228
1229
1230
 
# File 'ext/narray/na_func.c', line 1228

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)



793
794
 
# File 'ext/narray/na_func.c', line 793

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

#all? ⇒ Boolean

Returns:

  • (Boolean) 


36
37
38
 
# File 'lib/narray_ext.rb', line 36

def all?
  where.size == size
end

#and(obj2) ⇒ Object

method: self.and other



883
884
885
 
# File 'ext/narray/na_func.c', line 883

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



854
855
 
# File 'ext/narray/na_func.c', line 854

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

#any? ⇒ Boolean

Returns:

  • (Boolean) 


40
41
42
 
# File 'lib/narray_ext.rb', line 40

def any?
  where.size > 0
end

#ceil ⇒ Object

method: self.ceil



870
871
 
# File 'ext/narray/na_func.c', line 870

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

#clone ⇒ Object Also known as: dup

method: dup()



459
460
461
462
463
464
465
466
467
468
 
# File 'ext/narray/narray.c', line 459

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)



791
792
793
794
795
796
797
 
# File 'ext/narray/narray.c', line 791

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()



1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
 
# File 'ext/narray/narray.c', line 1131

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!()



1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
 
# File 'ext/narray/narray.c', line 1163

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) 


31
32
33
34
 
# File 'lib/narray_ext.rb', line 31

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

#conj ⇒ Object Also known as: conjugate

method: self.conj



862
863
 
# File 'ext/narray/na_func.c', line 862

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

#conj! ⇒ Object Also known as: conjugate!

method: self.conj!



813
814
 
# File 'ext/narray/na_func.c', line 813

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) 


571
572
573
574
575
 
# File 'ext/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) 


538
539
540
541
542
 
# File 'ext/narray/na_index.c', line 538

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

#cumprod ⇒ Object

cumprod



1410
1411
1412
1413
1414
 
# File 'ext/narray/na_func.c', line 1410

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

#cumprod! ⇒ Object

cumprod!

1 2 3 4 5

-> [1 3 6 10 15]



1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
 
# File 'ext/narray/na_func.c', line 1390

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



1380
1381
1382
1383
1384
 
# File 'ext/narray/na_func.c', line 1380

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

#cumsum! ⇒ Object

cumsum!

1 2 3 4 5

-> [1 3 6 10 15]



1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
 
# File 'ext/narray/na_func.c', line 1360

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



90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
 
# File 'lib/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)



801
802
 
# File 'ext/narray/na_func.c', line 801

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

#each ⇒ Object

iterator: each()



1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
 
# File 'ext/narray/narray.c', line 1105

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



589
590
591
592
593
594
595
 
# File 'ext/narray/narray.c', line 589

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) 


599
600
601
602
603
604
605
606
 
# File 'ext/narray/narray.c', line 599

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)



907
908
909
910
911
 
# File 'ext/narray/na_func.c', line 907

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

#eql?(other) ⇒ Boolean

Returns:

  • (Boolean) 


54
55
56
57
58
59
60
61
62
63
64
 
# File 'lib/narray_ext.rb', line 54

def eql?(other)
  self.class == other.class &&
    typecode == other.typecode &&
    shape == other.shape &&
    case typecode
    when 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)



1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
 
# File 'ext/narray/narray.c', line 1005

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



930
931
932
933
934
 
# File 'ext/narray/narray.c', line 930

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

#flatten! ⇒ Object

method: flatten!



915
916
917
918
919
920
921
922
923
924
925
926
 
# File 'ext/narray/narray.c', line 915

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



866
867
 
# File 'ext/narray/na_func.c', line 866

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

#ge(obj2) ⇒ Object Also known as: >=

method: self >= other



949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
 
# File 'ext/narray/na_func.c', line 949

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



932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
 
# File 'ext/narray/na_func.c', line 932

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 



66
67
68
69
70
71
72
73
 
# File 'lib/narray_ext.rb', line 66

def hash
  case typecode
  when 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



822
823
 
# File 'ext/narray/na_func.c', line 822

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



826
827
 
# File 'ext/narray/na_func.c', line 826

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

#im ⇒ Object

method: self.im



858
859
 
# File 'ext/narray/na_func.c', line 858

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



850
851
 
# File 'ext/narray/na_func.c', line 850

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

#imag=(obj2) ⇒ Object 



660
661
662
663
664
665
666
667
668
669
670
671
 
# File 'ext/narray/na_func.c', line 660

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,])



1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
 
# File 'ext/narray/narray.c', line 1024

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



801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
 
# File 'ext/narray/narray.c', line 801

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) 


26
27
28
29
30
 
# File 'lib/narray_ext.rb', line 26

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

#le(obj2) ⇒ Object Also known as: <=

method: self <= other



987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
 
# File 'ext/narray/na_func.c', line 987

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



968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
 
# File 'ext/narray/na_func.c', line 968

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:



578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
 
# File 'ext/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, … )



1487
1488
1489
 
# File 'ext/narray/na_func.c', line 1487

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

#mean(*ranks) ⇒ Object

Statistics



131
132
133
134
135
136
137
138
139
 
# File 'lib/narray_ext.rb', line 131

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

#median(rank = nil) ⇒ Object 



186
187
188
189
190
191
192
193
194
195
196
 
# File 'lib/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, … )



1482
1483
1484
 
# File 'ext/narray/na_func.c', line 1482

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)



809
810
 
# File 'ext/narray/na_func.c', line 809

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

#mul!(obj2) ⇒ Object

method: self.mul!(other)



805
806
 
# File 'ext/narray/na_func.c', line 805

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, … )



1339
1340
1341
1342
1343
1344
1345
 
# File 'ext/narray/na_func.c', line 1339

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, … )



1330
1331
1332
1333
1334
1335
1336
 
# File 'ext/narray/na_func.c', line 1330

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)



914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
 
# File 'ext/narray/na_func.c', line 914

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)



992
993
994
995
996
997
998
999
1000
1001
 
# File 'ext/narray/narray.c', line 992

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)



980
981
982
983
984
985
986
987
988
 
# File 'ext/narray/narray.c', line 980

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) 


44
45
46
 
# File 'lib/narray_ext.rb', line 44

def none?
  where.size == 0
end

#not ⇒ Object

method: self.not



878
879
 
# File 'ext/narray/na_func.c', line 878

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

#or(obj2) ⇒ Object

method: self.or other



888
889
890
 
# File 'ext/narray/na_func.c', line 888

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

#original ⇒ Object

method: self.original



324
325
326
327
328
329
330
331
 
# File 'ext/narray/narray.c', line 324

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

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

#prod(*args) ⇒ Object

method: prod( rank, … )



1272
1273
1274
 
# File 'ext/narray/na_func.c', line 1272

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

#random(*args) ⇒ Object 



432
433
434
435
436
 
# File 'ext/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 



405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
 
# File 'ext/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



200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
 
# File 'lib/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, "NArray type must be (S)FLOAT or (S)COMPLEX."
  end
  rr = NArray.new(type,size)
  xx = NArray.new(type,size)
  i = 0
  while i < size
    n = size-i
    m = ((n+Math::sqrt(n))*1.27).to_i
    x = NArray.new(type,m).random!(1) * 2 - 1
    y = 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 * NMath::sqrt( -2 * 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



240
241
242
243
 
# File 'lib/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



559
560
561
562
563
564
565
 
# File 'ext/narray/narray.c', line 559

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

#rank_total(*ranks) ⇒ Object 



75
76
77
78
79
80
81
82
83
84
85
86
87
 
# File 'lib/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



846
847
 
# File 'ext/narray/na_func.c', line 846

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

#recip ⇒ Object

method: self.recip



838
839
 
# File 'ext/narray/na_func.c', line 838

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

#refer ⇒ Object

method: self.refer



310
311
312
313
314
 
# File 'ext/narray/narray.c', line 310

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

#reshape(*args) ⇒ Object

method: reshape(size1,size2,…,sizeN)



902
903
904
905
906
907
908
909
910
911
 
# File 'ext/narray/narray.c', line 902

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)



890
891
892
893
894
895
896
897
898
 
# File 'ext/narray/narray.c', line 890

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 



245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
 
# File 'lib/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 



156
157
158
159
160
161
162
163
164
165
166
167
168
169
 
# File 'lib/narray_ext.rb', line 156

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

#rmsdev(*ranks) ⇒ Object 



171
172
173
174
175
176
177
178
179
180
181
182
183
184
 
# File 'lib/narray_ext.rb', line 171

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

#rot90(n_times = 1) ⇒ Object 



265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
 
# File 'lib/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



874
875
 
# File 'ext/narray/na_func.c', line 874

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

#sbt!(obj2) ⇒ Object

method: self.sbt!(other)



797
798
 
# File 'ext/narray/na_func.c', line 797

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



543
544
545
546
547
548
549
550
551
552
553
554
555
 
# File 'ext/narray/narray.c', line 543

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



569
570
571
572
573
574
575
 
# File 'ext/narray/narray.c', line 569

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

#slice(*args) ⇒ Object

method: slice(idx1,idx2,…,idxN)



643
644
 
# File 'ext/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()



1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
 
# File 'ext/narray/na_func.c', line 1516

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!()



1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
 
# File 'ext/narray/na_func.c', line 1547

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()



1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
 
# File 'ext/narray/na_func.c', line 1574

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 



141
142
143
144
145
146
147
148
149
150
151
152
153
154
 
# File 'lib/narray_ext.rb', line 141

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

#sum(*args) ⇒ Object

method: sum( rank, … )



1223
1224
1225
 
# File 'ext/narray/na_func.c', line 1223

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



818
819
 
# File 'ext/narray/na_func.c', line 818

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



549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
 
# File 'ext/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



662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
 
# File 'ext/narray/narray.c', line 662

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()



506
507
508
509
510
511
512
513
514
515
516
517
518
519
 
# File 'ext/narray/narray.c', line 506

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()



523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
 
# File 'ext/narray/narray.c', line 523

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



650
651
652
653
654
655
656
657
658
 
# File 'ext/narray/narray.c', line 650

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_string ⇒ Object

method: to_string



722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
 
# File 'ext/narray/narray.c', line 722

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)



489
490
491
492
493
494
495
496
497
498
499
500
501
502
 
# File 'ext/narray/narray.c', line 489

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)



687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
 
# File 'ext/narray/narray.c', line 687

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( … )



1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
 
# File 'ext/narray/na_func.c', line 1102

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



579
580
581
582
583
584
585
 
# File 'ext/narray/narray.c', line 579

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

#where ⇒ Object

method: where

idx_true = narray.where



1097
1098
1099
1100
1101
 
# File 'ext/narray/narray.c', line 1097

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

#where2 ⇒ Object

method: where2

idx_true, idx_false = narray.where2



1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
 
# File 'ext/narray/narray.c', line 1049

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



893
894
895
 
# File 'ext/narray/na_func.c', line 893

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

#|(obj2) ⇒ Object

method: self | other



735
736
 
# File 'ext/narray/na_func.c', line 735

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

#~ ⇒ Object

method: ~self



830
831
 
# File 'ext/narray/na_func.c', line 830

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