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add Float#nan?

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This commit is contained in:
Tomoyuki Sahara
2014-02-03 15:18:52 +09:00
parent 857e3cfa7c
commit 7bf63c2876
2 changed files with 14 additions and 0 deletions
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src/numeric.c
+7
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@@ -612,6 +612,12 @@ flo_truncate(mrb_state *mrb, mrb_value num)
return mrb_fixnum_value((mrb_int)f);
}
static mrb_value
flo_nan_p(mrb_state *mrb, mrb_value num)
{
return mrb_bool_value(isnan(mrb_float(num)));
}
/*
* Document-class: Integer
*
@@ -1331,4 +1337,5 @@ mrb_init_numeric(mrb_state *mrb)
mrb_define_method(mrb, fl, "to_s", flo_to_s, MRB_ARGS_NONE()); /* 15.2.9.3.16(x) */
mrb_define_method(mrb, fl, "inspect", flo_to_s, MRB_ARGS_NONE());
mrb_define_method(mrb, fl, "nan?", flo_nan_p, MRB_ARGS_NONE());
}