diff options
Diffstat (limited to 'math/w_exp10.c')
| -rw-r--r-- | math/w_exp10.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/math/w_exp10.c b/math/w_exp10.c new file mode 100644 index 0000000000..bf0d361f52 --- /dev/null +++ b/math/w_exp10.c @@ -0,0 +1,61 @@ +/* @(#)w_exp10.c + * Conversion to exp10 by Ulrich Drepper <drepper@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. + * ==================================================== + */ + +/* + * wrapper exp10(x) + */ + +#include "math.h" +#include "math_private.h" + +#ifdef __STDC__ +static const double +#else +static double +#endif +o_threshold= 3.0825471555991674389672e+02, +u_threshold= -3.2360724533877978485251e+02; + +#ifdef __STDC__ + double __exp10(double x) /* wrapper exp10 */ +#else + double __exp10(x) /* wrapper exp10 */ + double x; +#endif +{ +#ifdef _IEEE_LIBM + return __ieee754_exp10(x); +#else + double z; + z = __ieee754_exp10(x); + if(_LIB_VERSION == _IEEE_) return z; + if(__finite(x)) { + if(x>o_threshold) + return __kernel_standard(x,x,46); /* exp10 overflow */ + else if(x<u_threshold) + return __kernel_standard(x,x,47); /* exp10 underflow */ + } + return z; +#endif +} +weak_alias (__exp10, exp10) +strong_alias (__exp10, __pow10) +weak_alias (__pow10, pow10) +#ifdef NO_LONG_DOUBLE +strong_alias (__exp10, __exp10l) +weak_alias (__exp10, exp10l) +strong_alias (__exp10l, __pow10l) +weak_alias (__pow10l, pow10l) +#endif |