diff options
Diffstat (limited to 'newlib/libm/math/wf_pow.c')
| -rw-r--r-- | newlib/libm/math/wf_pow.c | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/newlib/libm/math/wf_pow.c b/newlib/libm/math/wf_pow.c deleted file mode 100644 index 42655da4a..000000000 --- a/newlib/libm/math/wf_pow.c +++ /dev/null @@ -1,179 +0,0 @@ -/* wf_pow.c -- float version of w_pow.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 powf(x,y) return x**y - */ - -#include "fdlibm.h" -#include <errno.h> - -#ifdef __STDC__ - float powf(float x, float y) /* wrapper powf */ -#else - float powf(x,y) /* wrapper powf */ - float x,y; -#endif -{ -#ifdef _IEEE_LIBM - return __ieee754_powf(x,y); -#else - float z; - struct exception exc; - z=__ieee754_powf(x,y); - if(_LIB_VERSION == _IEEE_|| isnanf(y)) return z; - if(isnanf(x)) { - if(y==(float)0.0) { - /* powf(NaN,0.0) */ - /* error only if _LIB_VERSION == _SVID_ & _XOPEN_ */ - exc.type = DOMAIN; - exc.name = "powf"; - exc.err = 0; - exc.arg1 = (double)x; - exc.arg2 = (double)y; - exc.retval = x; - if (_LIB_VERSION == _IEEE_ || - _LIB_VERSION == _POSIX_) exc.retval = 1.0; - else if (!matherr(&exc)) { - errno = EDOM; - } - if (exc.err != 0) - errno = exc.err; - return (float)exc.retval; - } else - return z; - } - if(x==(float)0.0){ - if(y==(float)0.0) { - /* powf(0.0,0.0) */ - /* error only if _LIB_VERSION == _SVID_ */ - exc.type = DOMAIN; - exc.name = "powf"; - exc.err = 0; - exc.arg1 = (double)x; - exc.arg2 = (double)y; - exc.retval = 0.0; - if (_LIB_VERSION != _SVID_) exc.retval = 1.0; - else if (!matherr(&exc)) { - errno = EDOM; - } - if (exc.err != 0) - errno = exc.err; - return (float)exc.retval; - } - if(finitef(y)&&y<(float)0.0) { - /* 0**neg */ - exc.type = DOMAIN; - exc.name = "powf"; - exc.err = 0; - exc.arg1 = (double)x; - exc.arg2 = (double)y; - if (_LIB_VERSION == _SVID_) - exc.retval = 0.0; - else - exc.retval = -HUGE_VAL; - if (_LIB_VERSION == _POSIX_) - errno = EDOM; - else if (!matherr(&exc)) { - errno = EDOM; - } - if (exc.err != 0) - errno = exc.err; - return (float)exc.retval; - } - return z; - } - if(!finitef(z)) { - if(finitef(x)&&finitef(y)) { - if(isnanf(z)) { - /* neg**non-integral */ - exc.type = DOMAIN; - exc.name = "powf"; - exc.err = 0; - exc.arg1 = (double)x; - exc.arg2 = (double)y; - if (_LIB_VERSION == _SVID_) - exc.retval = 0.0; - else - exc.retval = 0.0/0.0; /* X/Open allow 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 { - /* powf(x,y) overflow */ - exc.type = OVERFLOW; - exc.name = "powf"; - exc.err = 0; - exc.arg1 = (double)x; - exc.arg2 = (double)y; - if (_LIB_VERSION == _SVID_) { - exc.retval = HUGE; - y *= 0.5; - if(x<0.0&&rint(y)!=y) exc.retval = -HUGE; - } else { - exc.retval = HUGE_VAL; - y *= 0.5; - if(x<0.0&&rint(y)!=y) exc.retval = -HUGE_VAL; - } - if (_LIB_VERSION == _POSIX_) - errno = ERANGE; - else if (!matherr(&exc)) { - errno = ERANGE; - } - if (exc.err != 0) - errno = exc.err; - return (float)exc.retval; - } - } - } - if(z==(float)0.0&&finitef(x)&&finitef(y)) { - /* powf(x,y) underflow */ - exc.type = UNDERFLOW; - exc.name = "powf"; - exc.err = 0; - exc.arg1 = (double)x; - exc.arg2 = (double)y; - exc.retval = 0.0; - if (_LIB_VERSION == _POSIX_) - errno = ERANGE; - else if (!matherr(&exc)) { - errno = ERANGE; - } - if (exc.err != 0) - errno = exc.err; - return (float)exc.retval; - } - return z; -#endif -} - -#ifdef _DOUBLE_IS_32BITS - -#ifdef __STDC__ - double pow(double x, double y) -#else - double pow(x,y) - double x,y; -#endif -{ - return (double) powf((float) x, (float) y); -} - -#endif /* defined(_DOUBLE_IS_32BITS) */ |