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use NAN and INFINITY

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The macro str_to_mrb_float (strto[df]) converts a string to a number,
but these two macros can be used to directly get the special value.

The NAN macro requires quiet NaN support, but so does str_to_mrb_float.

This change also circumvents missing C99 support in Microsoft's C library.
Its (or ISO C90's) strtod doesn't parse "nan" or "inf".
This commit is contained in:
cremno
2014-03-08 16:38:50 +01:00
parent bd4b59cd04
commit f57b9d1576
1 changed files with 5 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/numeric.c
+5 -5
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@@ -304,8 +304,8 @@ flodivmod(mrb_state *mrb, mrb_float x, mrb_float y, mrb_float *divp, mrb_float *
mrb_float mod;
if (y == 0.0) {
div = str_to_mrb_float("inf");
mod = str_to_mrb_float("nan");
div = INFINITY;
mod = NAN;
}
else {
mod = fmod(x, y);
@@ -775,7 +775,7 @@ fix_mod(mrb_state *mrb, mrb_value x)
mrb_int mod;
if (mrb_fixnum(y) == 0) {
return mrb_float_value(mrb, str_to_mrb_float("nan"));
return mrb_float_value(mrb, NAN);
}
fixdivmod(mrb, a, mrb_fixnum(y), 0, &mod);
return mrb_fixnum_value(mod);
@@ -805,8 +805,8 @@ fix_divmod(mrb_state *mrb, mrb_value x)
mrb_int div, mod;
if (mrb_fixnum(y) == 0) {
return mrb_assoc_new(mrb, mrb_float_value(mrb, str_to_mrb_float("inf")),
mrb_float_value(mrb, str_to_mrb_float("nan")));
return mrb_assoc_new(mrb, mrb_float_value(mrb, INFINITY),
mrb_float_value(mrb, NAN));
}
fixdivmod(mrb, mrb_fixnum(x), mrb_fixnum(y), &div, &mod);
return mrb_assoc_new(mrb, mrb_fixnum_value(div), mrb_fixnum_value(mod));