| 0,0 → 1,83 |
|---|
| /* wf_atanh.c -- float version of w_atanh.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. |
| * ==================================================== |
| */ |
| /* |
| * wrapper atanhf(x) |
| */ |
| |
| #include "fdlibm.h" |
| #include <errno.h> |
| |
| #ifdef __STDC__ |
| float atanhf(float x) /* wrapper atanhf */ |
| #else |
| float atanhf(x) /* wrapper atanhf */ |
| float x; |
| #endif |
| { |
| #ifdef _IEEE_LIBM |
| return __ieee754_atanhf(x); |
| #else |
| float z,y; |
| struct exception exc; |
| z = __ieee754_atanhf(x); |
| if(_LIB_VERSION == _IEEE_ || isnan(x)) return z; |
| y = fabsf(x); |
| if(y>=(float)1.0) { |
| if(y>(float)1.0) { |
| /* atanhf(|x|>1) */ |
| exc.type = DOMAIN; |
| exc.name = "atanhf"; |
| exc.err = 0; |
| exc.arg1 = exc.arg2 = (double)x; |
| exc.retval = 0.0/0.0; |
| if (_LIB_VERSION == _POSIX_) |
| errno = EDOM; |
| else if (!matherr(&exc)) { |
| errno = EDOM; |
| } |
| } else { |
| /* atanhf(|x|=1) */ |
| exc.type = SING; |
| exc.name = "atanhf"; |
| exc.err = 0; |
| exc.arg1 = exc.arg2 = (double)x; |
| exc.retval = x/0.0; /* sign(x)*inf */ |
| if (_LIB_VERSION == _POSIX_) |
| errno = EDOM; |
| else if (!matherr(&exc)) { |
| errno = EDOM; |
| } |
| } |
| if (exc.err != 0) |
| errno = exc.err; |
| return (float)exc.retval; |
| } else |
| return z; |
| #endif |
| } |
| |
| #ifdef _DOUBLE_IS_32BITS |
| |
| #ifdef __STDC__ |
| double atanh(double x) |
| #else |
| double atanh(x) |
| double x; |
| #endif |
| { |
| return (double) atanhf((float) x); |
| } |
| |
| #endif /* defined(_DOUBLE_IS_32BITS) */ |