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authoreban <eban@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2001-03-07 05:43:11 +0000
committereban <eban@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2001-03-07 05:43:11 +0000
commitfc07b3b0ad1415ab93352246474251dd97700423 (patch)
treece12d3c56d0a5ebf13bba44b2750b4883c2a1a87 /math.c
parent93868607a2e19349e9ba3e3eba28698121d7b296 (diff)
* math.c (math_log, math_log10): should return NaN if x < 0.0
on Cygwin. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@1236 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'math.c')
-rw-r--r--math.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/math.c b/math.c
index a676abf..9b28ddb 100644
--- a/math.c
+++ b/math.c
@@ -64,6 +64,11 @@ math_exp(obj, x)
return rb_float_new(exp(RFLOAT(x)->value));
}
+#if defined __CYGWIN__
+#define log(x) ((x) < 0.0 ? 0.0 / 0.0 : log(x))
+#define log10(x) ((x) < 0.0 ? 0.0 / 0.0 : log10(x))
+#endif
+
static VALUE
math_log(obj, x)
VALUE obj, x;