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numeric_ext.c: define modulo and remainder methods for Integer.

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This commit is contained in:
Yukihiro "Matz" Matsumoto
2021-08-03 13:13:42 +09:00
parent b9d2b47f16
commit df6ef39d1c
1 changed files with 21 additions and 0 deletions
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mrbgems/mruby-numeric-ext/src/numeric_ext.c
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@@ -50,6 +50,24 @@ int_nobits(mrb_state *mrb, mrb_value self)
return mrb_bool_value((n & m) == 0);
}
/*
* call-seq:
* num.remainder(numeric) -> real
*
* <code>x.remainder(y)</code> means <code>x-y*(x/y).truncate</code>.
*
* See Numeric#divmod.
*/
static mrb_value
int_remainder(mrb_state *mrb, mrb_value self)
{
mrb_int n, m;
mrb_get_args(mrb, "i", &m);
n = mrb_integer(self);
return mrb_int_value(mrb, n % m);
}
void
mrb_mruby_numeric_ext_gem_init(mrb_state* mrb)
{
@@ -59,6 +77,9 @@ mrb_mruby_numeric_ext_gem_init(mrb_state* mrb)
mrb_define_method(mrb, i, "anybits?", int_anybits, MRB_ARGS_REQ(1));
mrb_define_method(mrb, i, "nobits?", int_nobits, MRB_ARGS_REQ(1));
mrb_define_alias(mrb, i, "modulo", "%");
mrb_define_method(mrb, i, "remainder", int_remainder, MRB_ARGS_REQ(1));
#ifndef MRB_NO_FLOAT
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));