diff options
Diffstat (limited to 'newlib/libm/math/w_acos.c')
-rw-r--r-- | newlib/libm/math/w_acos.c | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/newlib/libm/math/w_acos.c b/newlib/libm/math/w_acos.c deleted file mode 100644 index c9ca99c..0000000 --- a/newlib/libm/math/w_acos.c +++ /dev/null @@ -1,118 +0,0 @@ - -/* @(#)w_acos.c 5.1 93/09/24 */ -/* - * ==================================================== - * 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. - * ==================================================== - */ - -/* -FUNCTION - <<acos>>, <<acosf>>---arc cosine - -INDEX - acos -INDEX - acosf - -ANSI_SYNOPSIS - #include <math.h> - double acos(double <[x]>); - float acosf(float <[x]>); - -TRAD_SYNOPSIS - #include <math.h> - double acos(<[x]>) - double <[x]>; - - float acosf(<[x]>) - float <[x]>; - - - -DESCRIPTION - - <<acos>> computes the inverse cosine (arc cosine) of the input value. - Arguments to <<acos>> must be in the range @minus{}1 to 1. - - <<acosf>> is identical to <<acos>>, except that it performs - its calculations on <<floats>>. - -RETURNS - @ifinfo - <<acos>> and <<acosf>> return values in radians, in the range of 0 to pi. - @end ifinfo - @tex - <<acos>> and <<acosf>> return values in radians, in the range of <<0>> to $\pi$. - @end tex - - If <[x]> is not between @minus{}1 and 1, the returned value is NaN - (not a number) the global variable <<errno>> is set to <<EDOM>>, and a - <<DOMAIN error>> message is sent as standard error output. - - You can modify error handling for these functions using <<matherr>>. - - -QUICKREF ANSI SVID POSIX RENTRANT - acos y,y,y,m - acosf n,n,n,m - -MATHREF - acos, [-1,1], acos(arg),,, - acos, NAN, arg,DOMAIN,EDOM - -MATHREF - acosf, [-1,1], acosf(arg),,, - acosf, NAN, argf,DOMAIN,EDOM - -*/ - -/* - * wrap_acos(x) - */ - -#include "fdlibm.h" -#include <errno.h> - -#ifndef _DOUBLE_IS_32BITS - -#ifdef __STDC__ - double acos(double x) /* wrapper acos */ -#else - double acos(x) /* wrapper acos */ - double x; -#endif -{ -#ifdef _IEEE_LIBM - return __ieee754_acos(x); -#else - double z; - struct exception exc; - z = __ieee754_acos(x); - if(_LIB_VERSION == _IEEE_ || isnan(x)) return z; - if(fabs(x)>1.0) { - /* acos(|x|>1) */ - exc.type = DOMAIN; - exc.name = "acos"; - exc.err = 0; - exc.arg1 = exc.arg2 = x; - exc.retval = 0.0; - if (_LIB_VERSION == _POSIX_) - errno = EDOM; - else if (!matherr(&exc)) { - errno = EDOM; - } - if (exc.err != 0) - errno = exc.err; - return exc.retval; - } else - return z; -#endif -} - -#endif /* defined(_DOUBLE_IS_32BITS) */ |