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| author | Jakub Jelinek <jakub@redhat.com> | 2005-12-19 12:11:38 +0000 |
|---|---|---|
| committer | Jakub Jelinek <jakub@redhat.com> | 2005-12-19 12:11:38 +0000 |
| commit | 2c6cfe6853a30deb4af842aacc924fa298d0521a (patch) | |
| tree | 7fcc409e499bb8e3d96522f7fc2393fc10e53db2 /math/w_log2f.c | |
| parent | 3ccb96cd41b38d0159bdf8aad229c3599864c65d (diff) | |
| download | glibc-2c6cfe6853a30deb4af842aacc924fa298d0521a.tar.gz glibc-2c6cfe6853a30deb4af842aacc924fa298d0521a.tar.xz glibc-2c6cfe6853a30deb4af842aacc924fa298d0521a.zip | |
Updated to fedora-glibc-20051219T1003 cvs/fedora-glibc-2_3_90-19
Diffstat (limited to 'math/w_log2f.c')
| -rw-r--r-- | math/w_log2f.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/math/w_log2f.c b/math/w_log2f.c new file mode 100644 index 0000000000..ec8d297161 --- /dev/null +++ b/math/w_log2f.c @@ -0,0 +1,30 @@ +/* + * wrapper log2(X) + */ + +#include <math.h> +#include "math_private.h" + +float +__log2f (float x) /* wrapper log2f */ +{ +#ifdef _IEEE_LIBM + return __ieee754_log2f (x); +#else + float z; + z = __ieee754_log2f (x); + if (_LIB_VERSION == _IEEE_ || __isnanf (x)) return z; + if (x <= 0.0f) + { + if (x == 0.0f) + /* log2f (0) */ + return __kernel_standard ((double) x, (double) x, 148); + else + /* log2f (x < 0) */ + return __kernel_standard ((double) x, (double) x, 149); + } + else + return z; +#endif +} +weak_alias (__log2f, log2f) |