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Diffstat (limited to 'math/w_acosf.c')
| -rw-r--r-- | math/w_acosf.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/math/w_acosf.c b/math/w_acosf.c new file mode 100644 index 0000000..28260dd --- /dev/null +++ b/math/w_acosf.c @@ -0,0 +1,48 @@ +/* w_acosf.c -- float version of w_acos.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_acosf.c,v 1.3 1995/05/10 20:48:29 jtc Exp $"; +#endif + +/* + * wrap_acosf(x) + */ + +#include "math.h" +#include "math_private.h" + + +#ifdef __STDC__ + float __acosf(float x) /* wrapper acosf */ +#else + float __acosf(x) /* wrapper acosf */ + float x; +#endif +{ +#ifdef _IEEE_LIBM + return __ieee754_acosf(x); +#else + float z; + z = __ieee754_acosf(x); + if(_LIB_VERSION == _IEEE_ || __isnanf(x)) return z; + if(fabsf(x)>(float)1.0) { + /* acosf(|x|>1) */ + return (float)__kernel_standard((double)x,(double)x,101); + } else + return z; +#endif +} +weak_alias (__acosf, acosf) |