Class: GMP::F
- Inherits:
-
Numeric
- Object
- Numeric
- GMP::F
- Defined in:
- ext/gmpf.c,
ext/gmp.c,
ext/gmpf.c
Overview
GMP Multiple Precision floating point numbers.
Instances of this class can store variables of the type mpf_t. This class also contains many methods that act as the functions for mpf_t variables, as well as a few methods that attempt to make this library more Ruby-ish.
Class Method Summary collapse
- .const_catalan ⇒ Object
- .const_euler ⇒ Object
- .const_log2 ⇒ Object
- .const_pi ⇒ Object
- .default_prec ⇒ Object
- .default_prec=(arg) ⇒ Object
-
.default_rounding_mode ⇒ Object
******************************************************************** Rounding Related Functions * ********************************************************************.
- .default_rounding_mode=(arg) ⇒ Object
- .fac ⇒ Object
-
.inf(*args) ⇒ Object
Inf (positive infinity), an instance of GMP::F, or -Inf (negative infinity), if a negative Fixnum sign is passed.
- .mpfr_buildopt_decimal_p ⇒ Object
-
.mpfr_buildopt_tls_p ⇒ Object
******************************************************************** Rounding Related Functions * ********************************************************************.
-
.GMP::F.nan ⇒ Object
NaN, an instance of GMP::F.
-
.new(*args) ⇒ Object
Creates a new GMP::F floating-point number, with value as its value, converting where necessary.
-
.sprintf2(format, arg) ⇒ Object
rb_scan_args (argc, argv, “1*”, &format, &list);.
-
.zero(*args) ⇒ Object
zero or negative zero, an instance of GMP::F, depending on sign, a Fixnum.
Instance Method Summary collapse
-
#*(y) ⇒ Object
Returns the product of x and y.
-
#**(y) ⇒ Object
(also: #pow)
Returns x raised to the y power.
-
#+(y) ⇒ Object
Returns the sum of x and y.
-
#- ⇒ Object
Float Arithmetic.
- #-@ ⇒ Object
-
#/(y) ⇒ Object
(also: #divide)
Divides x by y.
- #< ⇒ Object
- #<= ⇒ Object
-
#<=>(arg) ⇒ Object
Float Comparison.
-
#==(arg) ⇒ Object
what does really “equal” mean ? it’s not obvious Is this a note that I, srawlins, put in here? It is not obvious to me…
- #> ⇒ Object
- #>= ⇒ Object
-
#abs ⇒ Object
call-seq: x.abs.
-
#abs! ⇒ Object
call-seq: x.abs!.
- #acos ⇒ Object
- #acosh ⇒ Object
-
#agm ⇒ Object
TODO “fms”, r_gmpfr_fms.
- #asin ⇒ Object
- #asinh ⇒ Object
- #atan ⇒ Object
- #atan2 ⇒ Object
- #atanh ⇒ Object
- #can_round?(err, rnd1, rnd2, prec) ⇒ Boolean
- #cbrt ⇒ Object
-
#ceil ⇒ Object
Miscellaneous Functions.
- #ceil! ⇒ Object
-
#coerce(arg) ⇒ Object
new method - testing.
- #cos ⇒ Object
- #cosh ⇒ Object
- #cot ⇒ Object
- #coth ⇒ Object
- #csc ⇒ Object
- #csch ⇒ Object
- #digamma ⇒ Object
- #eint ⇒ Object
- #erf ⇒ Object
- #erfc ⇒ Object
- #exp ⇒ Object
- #exp10 ⇒ Object
- #exp2 ⇒ Object
- #expm1 ⇒ Object
- #finite? ⇒ Boolean
- #floor ⇒ Object
- #floor! ⇒ Object
- #frexp ⇒ Object
- #gamma ⇒ Object
- #hypot ⇒ Object
- #infinite? ⇒ Boolean
- #initialize(*args) ⇒ Object constructor
-
#integer? ⇒ Boolean
Integer and Remainder Related Functions.
- #j0 ⇒ Object
- #j1 ⇒ Object
- #jn ⇒ Object
-
#lessgreater?(y) ⇒ Boolean
Return true if x < y or x > y; false otherwise.
- #li2 ⇒ Object
- #lngamma ⇒ Object
-
#log ⇒ Object
Special Functions.
- #log10 ⇒ Object
- #log1p ⇒ Object
- #log2 ⇒ Object
-
#nan? ⇒ Boolean
Comparison Functions.
-
#neg! ⇒ Object
call-seq: x.neg!.
- #number? ⇒ Boolean
-
#prec ⇒ Object
******************************************************************** unsorted * ********************************************************************.
- #prec=(arg) ⇒ Object
- #prec_raw=(arg) ⇒ Object
- #rec_sqrt ⇒ Object
- #regular? ⇒ Boolean
- #sec ⇒ Object
- #sech ⇒ Object
- #sgn ⇒ Object
- #sin ⇒ Object
- #sin_cos ⇒ Object
- #sinh ⇒ Object
- #sinh_cosh ⇒ Object
-
#sqrt ⇒ Object
Basic Arithmetic Functions.
- #tan ⇒ Object
- #tanh ⇒ Object
-
#to_d ⇒ Object
(also: #to_f)
Returns x as a Float.
-
#to_s(base = 10) ⇒ Object
(also: #inspect)
Returns a representation of x, as a String.
- #trunc ⇒ Object
- #trunc! ⇒ Object
-
#unordered?(y) ⇒ Boolean
Return true if x or y is a NaN; false otherwise.
- #y0 ⇒ Object
- #y1 ⇒ Object
- #yn ⇒ Object
- #zero? ⇒ Boolean
- #zeta ⇒ Object
Constructor Details
#initialize(*args) ⇒ Object
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# File 'ext/gmpf.c', line 96
VALUE r_gmpf_initialize(int argc, VALUE *argv, VALUE self)
{
MP_FLOAT *self_val, *arg_val_f;
unsigned long prec = 0;
VALUE arg;
#ifdef MPFR
mp_rnd_t rnd_mode_val;
#endif
int base = 10;
mpf_get_struct (self, self_val);
if (argc==0) {
#ifdef MPFR
mpfr_init (self_val);
mpfr_set_si (self_val, 0, __gmp_default_rounding_mode);
#else
r_mpf_init (self_val);
mpf_set_si (self_val, 0);
#endif
return Qnil;
}
arg = argv[0];
//argc >= 2 ==> argv[0] is value, argv[1] is prec
if (argc >= 2) {
if (FIXNUM_P(argv[1])) {
if (FIX2INT(argv[1]) >= 0)
prec = FIX2INT(argv[1]);
else {
r_mpf_init (self_val);
rb_raise(rb_eRangeError, "prec must be non-negative");
}
} else {
r_mpf_init (self_val);
rb_raise(rb_eTypeError, "prec must be a Fixnum");
}
} else if (GMPF_P(arg)) {
mpf_get_struct (arg, arg_val_f);
prec = mpf_get_prec (arg_val_f);
}
#ifdef MPFR
rnd_mode_val = __gmp_default_rounding_mode;
if (prec == 0)
mpfr_init (self_val);
else
mpfr_init2 (self_val, prec);
if (STRING_P(argv[0])) {
if (argc >= 3) {
if (FIXNUM_P(argv[2])) {
if (FIX2INT(argv[2]) >= 2 && FIX2INT(argv[2]) <= 36)
base = FIX2INT(argv[2]);
else
rb_raise(rb_eRangeError, "base must be between 2 and 36");
}
else {
rb_raise(rb_eTypeError, "base must be a Fixnum");
}
}
if (argc == 4) {
// TODO: FIGURE IT OUT. ACCEPT A ROUNDING MODE!
}
mpf_set_value2 (self_val, arg, base);
return Qnil;
} else { /* not STRING_P(argv[0]) */
if (argc == 3)
rnd_mode_val = r_get_rounding_mode (argv[2]);
}
if (GMPF_P (arg)) {
mpf_get_struct (arg, arg_val_f);
mpfr_set (self_val, arg_val_f, rnd_mode_val);
} else {
mpfr_set_value (self_val, arg, rnd_mode_val);
}
#else /* not MPFR */
(void)base;
if (prec == 0)
r_mpf_init (self_val);
else
r_mpf_init2 (self_val, prec);
if (GMPF_P(arg)) {
mpf_get_struct (arg, arg_val_f);
mpf_set (self_val, arg_val_f);
} else {
mpf_set_value (self_val, arg);
}
#endif
return Qnil;
}
|
Class Method Details
.const_catalan ⇒ Object
.const_euler ⇒ Object
.const_log2 ⇒ Object
.const_pi ⇒ Object
.default_prec ⇒ Object
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# File 'ext/gmp.c', line 41
static VALUE r_gmpfsg_get_default_prec(VALUE klass)
{
(void)klass;
return INT2NUM(mpf_get_default_prec());
}
|
.default_prec=(arg) ⇒ Object
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# File 'ext/gmp.c', line 47
static VALUE r_gmpfsg_set_default_prec(VALUE klass, VALUE arg)
{
(void)klass;
if (FIXNUM_P(arg)) {
if (FIX2NUM(arg) <= 0) {
rb_raise(rb_eRangeError, "prec must be positive");
}
mpf_set_default_prec (FIX2NUM(arg));
} else {
rb_raise(rb_eTypeError, "prec must be FixNum");
}
return Qnil;
}
|
.default_rounding_mode ⇒ Object
********************************************************************
Rounding Related Functions *
********************************************************************
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# File 'ext/gmpf.c', line 1330
VALUE r_gmpfsg_get_default_rounding_mode(VALUE klass)
{
const char *rounding_string_val;
(void)klass;
rounding_string_val = mpfr_print_rnd_mode (mpfr_get_default_rounding_mode ());
if ( rounding_string_val == NULL ) {
return Qnil;
}
else {
return rb_const_get (mGMP, rb_intern (rounding_string_val));
}
}
|
.default_rounding_mode=(arg) ⇒ Object
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# File 'ext/gmpf.c', line 1343
VALUE r_gmpfsg_set_default_rounding_mode(VALUE klass, VALUE arg)
{
VALUE mode;
(void)klass;
if (GMPRND_P(arg)) {
mode = rb_funcall (arg, rb_intern("mode"), 0);
if (FIX2INT(mode) < 0 || FIX2INT(mode) > 3) {
rb_raise(rb_eRangeError, "rounding mode must be one of the rounding mode constants.");
}
} else {
rb_raise(rb_eTypeError, "rounding mode must be one of the rounding mode constants.");
}
switch (FIX2INT(mode)) {
case 0:
mpfr_set_default_rounding_mode (GMP_RNDN); break;
case 1:
mpfr_set_default_rounding_mode (GMP_RNDZ); break;
case 2:
mpfr_set_default_rounding_mode (GMP_RNDU); break;
case 3:
mpfr_set_default_rounding_mode (GMP_RNDD); break;
#if MPFR_VERSION_MAJOR>2
case 4:
mpfr_set_default_rounding_mode (MPFR_RNDA); break;
#endif
}
return Qnil;
}
|
.fac ⇒ Object
.GMP::F.inf ⇒ Object .GMP::F.inf(sign) ⇒ Object
Inf (positive infinity), an instance of GMP::F, or -Inf (negative infinity), if a negative Fixnum sign is passed
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# File 'ext/gmpf.c', line 302
VALUE r_gmpfsg_inf(int argc, VALUE *argv, VALUE klass)
{
MP_FLOAT *res;
VALUE sign_val, res_val;
int sign;
(void)klass;
rb_scan_args (argc, argv, "01", &sign_val);
if (NIL_P (sign_val)) { sign = 1; }
else if (FIXNUM_P (sign_val)) { sign = FIX2INT (sign_val); }
else { typeerror_as (X, "sign"); }
mpf_make_struct_init (res_val, res, mpfr_get_default_prec());
mpfr_set_inf (res, sign);
return res_val;
}
|
.mpfr_buildopt_decimal_p ⇒ Object
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# File 'ext/gmpf.c', line 1408
VALUE r_gmpfsg_mpfr_buildopt_decimal_p(VALUE klass)
{
(void)klass;
return INT2FIX (mpfr_buildopt_decimal_p());
}
|
.mpfr_buildopt_tls_p ⇒ Object
********************************************************************
Rounding Related Functions *
********************************************************************
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# File 'ext/gmpf.c', line 1402
VALUE r_gmpfsg_mpfr_buildopt_tls_p(VALUE klass)
{
(void)klass;
return INT2FIX (mpfr_buildopt_tls_p());
}
|
.GMP::F.nan ⇒ Object
NaN, an instance of GMP::F
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# File 'ext/gmpf.c', line 282
VALUE r_gmpfsg_nan(VALUE klass)
{
MP_FLOAT *res;
VALUE res_val;
(void)klass;
mpf_make_struct_init (res_val, res, mpfr_get_default_prec());
mpfr_set_nan (res);
return res_val;
}
|
.GMP::F.new(value) ⇒ Object .GMP::F.new(value, precision) ⇒ Object .GMP::F.new(value, precision, rounding_mode) ⇒ Object .GMP::F.new(string_value, precision, base) ⇒ Object
Creates a new GMP::F floating-point number, with value as its value, converting where necessary. value must be an instance of one of the following classes:
-
Fixnum
-
Bignum
-
GMP::Z
-
Float
-
GMP::Q
-
GMP::F
-
String
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# File 'ext/gmpf.c', line 81
VALUE r_gmpfsg_new(int argc, VALUE *argv, VALUE klass)
{
MP_FLOAT *res_val;
VALUE res;
(void)klass;
if (argc > 4)
rb_raise(rb_eArgError, "wrong # of arguments (%d for 0, 1 2, 3, or 4)", argc);
mpf_make_struct (res, res_val);
rb_obj_call_init(res, argc, argv);
return res;
}
|
.sprintf2(format, arg) ⇒ Object
rb_scan_args (argc, argv, “1*”, &format, &list);
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# File 'ext/gmpf.c', line 1237
VALUE r_gmpfrsg_sprintf2(VALUE klass, VALUE format, VALUE arg) {
VALUE res;
char *buffer;
char *format_str;
MP_INT *arg_val_z;
MP_FLOAT *arg_val_f;
(void)klass;
format_str = StringValuePtr (format);
if (GMPZ_P (arg)) {
mpz_get_struct (arg, arg_val_z);
mpfr_asprintf (&buffer, format_str, arg_val_z);
} else if (GMPF_P (arg)) {
mpf_get_struct (arg, arg_val_f);
mpfr_asprintf (&buffer, format_str, arg_val_f);
}
res = rb_str_new2 (buffer);
free (buffer);
return res;
}
|
.GMP::F.zero ⇒ Object .GMP::F.zero(sign) ⇒ Object
zero or negative zero, an instance of GMP::F, depending on sign, a Fixnum
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# File 'ext/gmpf.c', line 328
VALUE r_gmpfsg_zero(int argc, VALUE *argv, VALUE klass)
{
MP_FLOAT *res;
VALUE sign_val, res_val;
int sign;
(void)klass;
rb_scan_args (argc, argv, "01", &sign_val);
if (NIL_P (sign_val)) { sign = 1; }
else if (FIXNUM_P (sign_val)) { sign = FIX2INT (sign_val); }
else { typeerror_as (X, "sign"); }
mpf_make_struct_init (res_val, res, mpfr_get_default_prec());
mpfr_set_zero (res, sign);
return res_val;
}
|
Instance Method Details
#*(y) ⇒ Object
Returns the product of x and y. y can be
-
GMP::Z
-
Fixnum
-
GMP::Q
-
GMP::F
-
Bignum
-
Float
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# File 'ext/gmpf.c', line 636
VALUE r_gmpf_mul(VALUE self, VALUE arg)
{
MP_FLOAT *self_val, *res_val, *arg_val_f;
MP_RAT *arg_val_q;
MP_INT *arg_val_z;
VALUE res;
mpfr_prec_t prec;
mpf_get_struct_prec (self, self_val, prec);
if (GMPF_P(arg)) {
mpf_get_struct(arg, arg_val_f);
prec_max(prec, arg_val_f);
mpf_make_struct_init(res, res_val, prec);
mpf_mul(res_val, self_val, arg_val_f);
} else if (GMPQ_P(arg)) {
mpq_get_struct(arg, arg_val_q);
mpf_make_struct_init(res, res_val, prec);
mpf_set_q(res_val, arg_val_q);
mpf_mul(res_val, self_val, res_val);
} else if (GMPZ_P(arg)) {
mpz_get_struct(arg, arg_val_z);
mpf_make_struct_init(res, res_val, prec);
mpf_set_z(res_val, arg_val_z);
mpf_mul(res_val, self_val, res_val);
} else if (FLOAT_P(arg)) {
mpf_make_struct_init(res, res_val, prec);
mpf_set_d(res_val, NUM2DBL(arg));
mpf_mul(res_val, self_val, res_val);
} else if (FIXNUM_P(arg)) { // _ui with sign control instead ?
mpf_make_struct_init(res, res_val, prec);
mpf_set_si(res_val, FIX2NUM(arg));
mpf_mul(res_val, self_val, res_val);
} else if (BIGNUM_P(arg)) {
mpz_temp_from_bignum(arg_val_z, arg);
mpf_make_struct_init(res, res_val, prec);
mpf_set_z(res_val, arg_val_z);
mpf_mul(res_val, res_val, self_val);
mpz_temp_free(arg_val_z);
} else {
typeerror(ZQFXBD);
}
return res;
}
|
#**(y) ⇒ Object Also known as: pow
Returns x raised to the y power. y must be
-
an instance of Fixnum or Bignum
-
non-negative
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# File 'ext/gmpf.c', line 690
VALUE r_gmpf_pow(VALUE self, VALUE arg)
{
MP_FLOAT *self_val, *res_val;
VALUE res;
//unsigned long prec;
mpfr_prec_t prec;
mpf_get_struct_prec (self, self_val, prec);
if (FIXNUM_P(arg)) {
if (FIX2NUM(arg) >= 0) {
mpf_make_struct_init(res, res_val, prec);
mpf_pow_ui(res_val, self_val, FIX2NUM(arg));
} else {
rb_raise(rb_eRangeError, "power must be non-negative");
}
} else {
typeerror(X);
}
return res;
}
|
#+(y) ⇒ Object
Returns the sum of x and y. y must be an instance of:
-
GMP::Z
-
Fixnum
-
GMP::Q
-
GMP::F
-
Bignum
-
Float
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# File 'ext/gmpf.c', line 454
VALUE r_gmpf_add(VALUE self, VALUE arg)
{
MP_FLOAT *self_val, *res_val, *arg_val_f;
MP_RAT *arg_val_q;
MP_INT *arg_val_z;
VALUE res;
mpfr_prec_t prec;
mpf_get_struct_prec (self, self_val, prec);
if (GMPF_P(arg)) {
mpf_get_struct (arg, arg_val_f);
prec_max(prec, arg_val_f);
mpf_make_struct_init(res, res_val, prec);
mpf_add(res_val, self_val, arg_val_f);
} else if (GMPQ_P(arg)) {
mpq_get_struct (arg, arg_val_q);
mpf_make_struct_init(res, res_val, prec);
mpf_set_q (res_val, arg_val_q);
mpf_add (res_val, res_val, self_val);
} else if (GMPZ_P(arg)) {
mpz_get_struct (arg, arg_val_z);
mpf_make_struct_init(res, res_val, prec);
mpf_set_z (res_val, arg_val_z);
mpf_add (res_val, res_val, self_val);
} else if (FLOAT_P(arg)) {
mpf_make_struct_init(res, res_val, prec);
mpf_set_d (res_val, NUM2DBL(arg));
mpf_add (res_val, res_val, self_val);
} else if (FIXNUM_P(arg)) { // _ui with sign control instead ?
mpf_make_struct_init(res, res_val, prec);
mpf_set_si (res_val, FIX2NUM(arg));
mpf_add (res_val, res_val, self_val);
} else if (BIGNUM_P(arg)) {
mpz_temp_from_bignum(arg_val_z, arg);
mpf_make_struct_init(res, res_val, prec);
mpf_set_z (res_val, arg_val_z);
mpf_add (res_val, res_val, self_val);
mpz_temp_free(arg_val_z);
} else {
typeerror(ZQFXBD);
}
return res;
}
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#- ⇒ Object
Float Arithmetic
#-@ ⇒ Object
#/(y) ⇒ Object Also known as: divide
Divides x by y. y can be
-
GMP::Z
-
Fixnum
-
GMP::Q
-
GMP::F
-
Bignum
-
Float
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# File 'ext/gmpf.c', line 726
VALUE r_gmpf_div(VALUE self, VALUE arg)
{
MP_FLOAT *self_val, *res_val, *arg_val_f;
MP_RAT *arg_val_q;
MP_INT *arg_val_z;
VALUE res;
mpfr_prec_t prec;
mpf_get_struct_prec (self, self_val, prec);
if (GMPF_P(arg)) {
mpf_get_struct(arg, arg_val_f);
prec_max(prec, arg_val_f);
mpf_make_struct_init(res, res_val, prec);
mpf_div(res_val, self_val, arg_val_f);
} else if (GMPQ_P(arg)) {
mpq_get_struct(arg, arg_val_q);
mpf_make_struct_init(res, res_val, prec);
mpf_set_q(res_val, arg_val_q);
mpf_div(res_val, self_val, res_val);
} else if (GMPZ_P(arg)) {
mpz_get_struct(arg, arg_val_z);
mpf_make_struct_init(res, res_val, prec);
mpf_set_z(res_val, arg_val_z);
mpf_div(res_val, self_val, res_val);
} else if (FLOAT_P(arg)) {
mpf_make_struct_init(res, res_val, prec);
mpf_set_d(res_val, NUM2DBL(arg));
mpf_div(res_val, self_val, res_val);
} else if (FIXNUM_P(arg)) { // _ui with sign control instead ?
mpf_make_struct_init(res, res_val, prec);
mpf_set_si(res_val, FIX2NUM(arg));
mpf_div(res_val, self_val, res_val);
} else if (BIGNUM_P(arg)) {
mpz_temp_from_bignum(arg_val_z, arg);
mpf_make_struct_init(res, res_val, prec);
mpf_set_z(res_val, arg_val_z);
mpf_div(res_val, self_val, res_val);
mpz_temp_free(arg_val_z);
} else {
typeerror(ZQFXBD);
}
return res;
}
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#< ⇒ Object
#<= ⇒ Object
#<=>(arg) ⇒ Object
Float Comparison
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# File 'ext/gmpf.c', line 899
VALUE r_gmpf_cmp(VALUE self, VALUE arg)
{
MP_FLOAT *self_val;
int res;
mpf_get_struct (self, self_val);
res = mpf_cmp_value (self_val, arg);
if (res > 0)
return INT2FIX(1);
else if (res == 0)
return INT2FIX(0);
else
return INT2FIX(-1);
}
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#==(arg) ⇒ Object
what does really “equal” mean ? it’s not obvious Is this a note that I, srawlins, put in here? It is not obvious to me…
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# File 'ext/gmpf.c', line 892
VALUE r_gmpf_eq(VALUE self, VALUE arg)
{
MP_FLOAT *self_val;
mpf_get_struct (self,self_val);
return (mpf_cmp_value(self_val, arg) == 0) ? Qtrue : Qfalse;
}
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#> ⇒ Object
#>= ⇒ Object
#abs ⇒ Object
call-seq:
x.abs
Returns the absolute value of x.
#abs! ⇒ Object
call-seq:
x.abs!
Sets x to the absolute value of x.
#acos ⇒ Object
#acosh ⇒ Object
#agm ⇒ Object
TODO “fms”, r_gmpfr_fms
#asin ⇒ Object
#asinh ⇒ Object
#atan ⇒ Object
#atan2 ⇒ Object
#atanh ⇒ Object
#can_round?(err, rnd1, rnd2, prec) ⇒ Boolean
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# File 'ext/gmpf.c', line 1374
VALUE r_gmpf_can_round(VALUE self, VALUE err, VALUE rnd1, VALUE rnd2, VALUE prec)
{
MP_FLOAT *self_val;
mp_exp_t err_val;
mpfr_rnd_t rnd1_val, rnd2_val;
mpfr_prec_t prec_val;
mpf_get_struct(self, self_val);
if (FIXNUM_P(err)) {
err_val = FIX2INT(err);
} else {
typeerror_as(X, "err");
}
rnd1_val = r_get_rounding_mode(rnd1);
rnd2_val = r_get_rounding_mode(rnd2);
prec_val = FIX2INT (prec);
if (mpfr_can_round (self_val, err_val, rnd1_val, rnd2_val, prec_val))
return Qtrue;
else
return Qfalse;
}
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#cbrt ⇒ Object
#ceil ⇒ Object
Miscellaneous Functions
#ceil! ⇒ Object
#coerce(arg) ⇒ Object
new method - testing
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# File 'ext/gmp.c', line 36
static VALUE r_gmpf_coerce(VALUE self, VALUE arg)
{
return rb_assoc_new(r_gmpfsg_new(1, &arg, cGMP_F), self);
}
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#cos ⇒ Object
#cosh ⇒ Object
#cot ⇒ Object
#coth ⇒ Object
#csc ⇒ Object
#csch ⇒ Object
#digamma ⇒ Object
#eint ⇒ Object
#erf ⇒ Object
#erfc ⇒ Object
#exp ⇒ Object
#exp10 ⇒ Object
#exp2 ⇒ Object
#expm1 ⇒ Object
#finite? ⇒ Boolean
#floor ⇒ Object
#floor! ⇒ Object
#frexp ⇒ Object
#gamma ⇒ Object
#hypot ⇒ Object
#infinite? ⇒ Boolean
#integer? ⇒ Boolean
Integer and Remainder Related Functions
#j0 ⇒ Object
#j1 ⇒ Object
#jn ⇒ Object
#lessgreater?(y) ⇒ Boolean
Return true if x < y or x > y; false otherwise
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# File 'ext/gmpf.c', line 939
VALUE r_gmpfr_lessgreater_p(VALUE self_val, VALUE arg_val)
{
MP_FLOAT *self, *arg;
if (!GMPF_P (arg_val))
typeerror_as (F, "arg");
mpf_get_struct (self_val, self);
mpf_get_struct (arg_val, arg);
return (mpfr_lessgreater_p (self, arg) != 0) ? Qtrue : Qfalse;
}
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#li2 ⇒ Object
#lngamma ⇒ Object
#log ⇒ Object
Special Functions
#log10 ⇒ Object
#log1p ⇒ Object
#log2 ⇒ Object
#nan? ⇒ Boolean
Comparison Functions
#neg! ⇒ Object
call-seq:
x.neg!
Sets x to -x.
#number? ⇒ Boolean
#prec ⇒ Object
********************************************************************
_unsorted_ *
********************************************************************
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# File 'ext/gmpf.c', line 1421
VALUE r_gmpf_get_prec(VALUE self)
{
MP_FLOAT *self_val;
mpf_get_struct (self, self_val);
return INT2NUM (mpf_get_prec (self_val));
}
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#prec=(arg) ⇒ Object
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# File 'ext/gmpf.c', line 1428
VALUE r_gmpf_set_prec(VALUE self, VALUE arg)
{
MP_FLOAT *self_val;
if (FIXNUM_P(arg)) {
mpf_get_struct (self, self_val);
mpf_set_prec (self_val, FIX2NUM (arg));
return Qnil;
} else {
typeerror(X);
}
}
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#prec_raw=(arg) ⇒ Object
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# File 'ext/gmpf.c', line 1440
VALUE r_gmpf_set_prec_raw(VALUE self, VALUE arg)
{
MP_FLOAT *self_val;
if (FIXNUM_P(arg)) {
mpf_get_struct (self, self_val);
mpf_set_prec_raw (self_val, FIX2NUM (arg));
return Qnil;
} else {
typeerror(X);
}
}
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#rec_sqrt ⇒ Object
#regular? ⇒ Boolean
#sec ⇒ Object
#sech ⇒ Object
#sgn ⇒ Object
#sin ⇒ Object
#sin_cos ⇒ Object
#sinh ⇒ Object
#sinh_cosh ⇒ Object
#sqrt ⇒ Object
Basic Arithmetic Functions
#tan ⇒ Object
#tanh ⇒ Object
#to_d ⇒ Object Also known as: to_f
Returns x as a Float.
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# File 'ext/gmpf.c', line 371
VALUE r_gmpf_to_d(VALUE self)
{
MP_FLOAT *self_val;
mpf_get_struct(self, self_val);
return rb_float_new(mpf_get_d(self_val));
}
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#to_s(base = 10) ⇒ Object Also known as: inspect
Returns a representation of x, as a String. By default, the String will be the decimal representation. Any valid GMP base can be passed.
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# File 'ext/gmpf.c', line 386
VALUE r_gmpf_to_s(int argc, VALUE *argv, VALUE self_val)
{
MP_FLOAT *self;
char *str, *str2;
VALUE res_val;
mp_exp_t exponent;
VALUE base_val;
int base = 10;
mpf_get_struct (self_val, self);
/* TODO: accept a second optional argument, n_digits */
rb_scan_args (argc, argv, "01", &base_val);
if (NIL_P (base_val)) { base = 10; } /* default value */
else { base = get_base (base_val); }
#ifndef MPFR
str = mpf_get_str (NULL, &exponent, base, 0, self);
#else
str = mpfr_get_str (NULL, &exponent, base, 0, self, __gmp_default_rounding_mode);
#endif
if ((strcmp (str, "NaN") == 0) ||
(strcmp (str, "Inf") == 0) ||
(strcmp (str, "-Inf") == 0))
{
res_val = rb_str_new2 (str);
}
else
{
if (str[0] == '-')
__gmp_asprintf (&str2, "-0.%se%+ld", str+1, exponent);
else
__gmp_asprintf (&str2, "0.%se%+ld", str, exponent);
res_val = rb_str_new2 (str2);
#ifndef MPFR
free (str2);
#else
mpfr_free_str (str2);
#endif
}
#ifndef MPFR
free (str);
#else
mpfr_free_str (str);
#endif
return res_val;
}
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#trunc ⇒ Object
#trunc! ⇒ Object
#unordered?(y) ⇒ Boolean
Return true if x or y is a NaN; false otherwise
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# File 'ext/gmpf.c', line 957
VALUE r_gmpfr_unordered_p(VALUE self_val, VALUE arg_val)
{
MP_FLOAT *self, *arg;
if (!GMPF_P (arg_val))
typeerror_as (F, "arg");
mpf_get_struct (self_val, self);
mpf_get_struct (arg_val, arg);
return (mpfr_unordered_p (self, arg) != 0) ? Qtrue : Qfalse;
}
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