diff options
Diffstat (limited to 'math/w_atanhf.c')
| -rw-r--r-- | math/w_atanhf.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/math/w_atanhf.c b/math/w_atanhf.c new file mode 100644 index 0000000..0b24f2c --- /dev/null +++ b/math/w_atanhf.c @@ -0,0 +1,53 @@ +/* w_atanhf.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. + * ==================================================== + */ + +#if defined(LIBM_SCCS) && !defined(lint) +static char rcsid[] = "$NetBSD: w_atanhf.c,v 1.3 1995/05/10 20:48:45 jtc Exp $"; +#endif + +/* + * wrapper atanhf(x) + */ + +#include "math.h" +#include "math_private.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; + z = __ieee754_atanhf(x); + if(_LIB_VERSION == _IEEE_ || __isnanf(x)) return z; + y = fabsf(x); + if(y>=(float)1.0) { + if(y>(float)1.0) + /* atanhf(|x|>1) */ + return (float)__kernel_standard((double)x,(double)x,130); + else + /* atanhf(|x|==1) */ + return (float)__kernel_standard((double)x,(double)x,131); + } else + return z; +#endif +} +weak_alias (__atanhf, atanhf) |