From f95a4a932476be2ba99e2fd081e8d2bc6ea12813 Mon Sep 17 00:00:00 2001 From: PikalaxALT Date: Fri, 15 Dec 2017 09:38:53 -0500 Subject: Import newlib and create makefile --- newlib/libm/mathfp/sf_log.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 newlib/libm/mathfp/sf_log.c (limited to 'newlib/libm/mathfp/sf_log.c') diff --git a/newlib/libm/mathfp/sf_log.c b/newlib/libm/mathfp/sf_log.c new file mode 100644 index 0000000..b746d44 --- /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) */ -- cgit v1.2.3