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[/] [openrisc/] [trunk/] [gnu-stable/] [newlib-1.18.0/] [newlib/] [libm/] [math/] [wf_acos.c] - Rev 207
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/* wf_acos.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. * ==================================================== */ /* * wrap_acosf(x) */ #include "fdlibm.h" #include <errno.h> #ifdef _HAVE_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; struct exception exc; z = __ieee754_acosf(x); if(_LIB_VERSION == _IEEE_ || isnan(x)) return z; if(fabsf(x)>(float)1.0) { /* acosf(|x|>1) */ exc.type = DOMAIN; exc.name = "acosf"; exc.err = 0; exc.arg1 = exc.arg2 = (double)x; exc.retval = nan(""); 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 acos(double x) #else double acos(x) double x; #endif { return (double) acosf((float) x); } #endif /* defined(_DOUBLE_IS_32BITS) */
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