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Diffstat (limited to 'lib/msun/src/w_log10f.c')
-rw-r--r-- | lib/msun/src/w_log10f.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/lib/msun/src/w_log10f.c b/lib/msun/src/w_log10f.c new file mode 100644 index 0000000..b5f1247 --- /dev/null +++ b/lib/msun/src/w_log10f.c @@ -0,0 +1,51 @@ +/* w_log10f.c -- float version of w_log10.c. + * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com. + */ + +/* + * ==================================================== + * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. + * + * Developed at SunPro, a Sun Microsystems, Inc. business. + * Permission to use, copy, modify, and distribute this + * software is freely granted, provided that this notice + * is preserved. + * ==================================================== + */ + +#ifndef lint +static char rcsid[] = "$FreeBSD$"; +#endif + +/* + * wrapper log10f(X) + */ + +#include "math.h" +#include "math_private.h" + + +#ifdef __STDC__ + float log10f(float x) /* wrapper log10f */ +#else + float log10f(x) /* wrapper log10f */ + float x; +#endif +{ +#ifdef _IEEE_LIBM + return __ieee754_log10f(x); +#else + float z; + z = __ieee754_log10f(x); + if(_LIB_VERSION == _IEEE_ || isnanf(x)) return z; + if(x<=(float)0.0) { + if(x==(float)0.0) + /* log10(0) */ + return (float)__kernel_standard((double)x,(double)x,118); + else + /* log10(x<0) */ + return (float)__kernel_standard((double)x,(double)x,119); + } else + return z; +#endif +} |