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numeric_ext.c: add Float#modulo and #remainder methods.

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This commit is contained in:
Yukihiro "Matz" Matsumoto
2021-08-03 16:30:47 +09:00
parent f4afcbef67
commit e75572af6a
1 changed files with 19 additions and 0 deletions
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mrbgems/mruby-numeric-ext/src/numeric_ext.c
+19
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@@ -1,6 +1,7 @@
#include <mruby.h>
#include <mruby/numeric.h>
#include <mruby/presym.h>
#include <math.h>
/*
* call-seq:
@@ -87,6 +88,19 @@ int_remainder(mrb_state *mrb, mrb_value x)
#endif
}
#ifndef MRB_NO_FLOAT
static mrb_value
flo_remainder(mrb_state *mrb, mrb_value self)
{
mrb_float a, b;
a = mrb_float(self);
mrb_get_args(mrb, "f", &b);
if (b == 0) zerodiv(mrb);
return mrb_float_value(mrb, a-b*trunc(a/b));
}
#endif
void
mrb_mruby_numeric_ext_gem_init(mrb_state* mrb)
{
@@ -100,6 +114,11 @@ mrb_mruby_numeric_ext_gem_init(mrb_state* mrb)
mrb_define_method(mrb, i, "remainder", int_remainder, MRB_ARGS_REQ(1));
#ifndef MRB_NO_FLOAT
struct RClass *f = mrb_class_get(mrb, "Float");
mrb_define_alias(mrb, f, "modulo", "%");
mrb_define_method(mrb, f, "remainder", flo_remainder, MRB_ARGS_REQ(1));
mrb_define_const_id(mrb, mrb->float_class, MRB_SYM(RADIX), mrb_fixnum_value(MRB_FLT_RADIX));
mrb_define_const_id(mrb, mrb->float_class, MRB_SYM(MANT_DIG), mrb_fixnum_value(MRB_FLT_MANT_DIG));
mrb_define_const_id(mrb, mrb->float_class, MRB_SYM(EPSILON), mrb_float_value(mrb, MRB_FLT_EPSILON));