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| author | Christopher Faylor <me@cgf.cx> | 2000-02-17 19:39:52 +0000 |
|---|---|---|
| committer | Christopher Faylor <me@cgf.cx> | 2000-02-17 19:39:52 +0000 |
| commit | 8a0efa53e44919bcf5ccb1d3353618a82afdf8bc (patch) | |
| tree | 68c3dbf3f2c6fd5d49777def9914d77b5cd4589d /newlib/libm/mathfp/sf_log.c | |
| parent | 1fd5e000ace55b323124c7e556a7a864b972a5c4 (diff) | |
| download | cygnal-8a0efa53e44919bcf5ccb1d3353618a82afdf8bc.tar.gz cygnal-8a0efa53e44919bcf5ccb1d3353618a82afdf8bc.tar.bz2 cygnal-8a0efa53e44919bcf5ccb1d3353618a82afdf8bc.zip | |
import newlib-2000-02-17 snapshot
Diffstat (limited to 'newlib/libm/mathfp/sf_log.c')
| -rw-r--r-- | newlib/libm/mathfp/sf_log.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/newlib/libm/mathfp/sf_log.c b/newlib/libm/mathfp/sf_log.c new file mode 100644 index 000000000..b746d444f --- /dev/null +++ b/newlib/libm/mathfp/sf_log.c @@ -0,0 +1,34 @@ + +/* @(#)z_logf.c 1.0 98/08/13 */ +/****************************************************************** + * Logarithm + * + * Input: + * x - floating point value + * + * Output: + * natural logarithm of x + * + * Description: + * This routine returns the natural logarithm of x. + * + *****************************************************************/ + +#include "fdlibm.h" +#include "zmath.h" + +float +_DEFUN (logf, (float), + float x) +{ + return (logarithmf (x, 0)); +} + +#ifdef _DOUBLE_IS_32BITS + +double log (double x) +{ + return (double) logf ((float) x); +} + +#endif /* defined(_DOUBLE_IS_32BITS) */ |