From f95a4a932476be2ba99e2fd081e8d2bc6ea12813 Mon Sep 17 00:00:00 2001 From: PikalaxALT Date: Fri, 15 Dec 2017 09:38:53 -0500 Subject: Import newlib and create makefile --- newlib/libm/math/wf_sqrt.c | 72 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 newlib/libm/math/wf_sqrt.c (limited to 'newlib/libm/math/wf_sqrt.c') diff --git a/newlib/libm/math/wf_sqrt.c b/newlib/libm/math/wf_sqrt.c new file mode 100644 index 0000000..6e792c9 --- /dev/null +++ b/newlib/libm/math/wf_sqrt.c @@ -0,0 +1,72 @@ +/* wf_sqrt.c -- float version of w_sqrt.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 sqrtf(x) + */ + +#include "fdlibm.h" +#include + +#ifdef __STDC__ + float sqrtf(float x) /* wrapper sqrtf */ +#else + float sqrtf(x) /* wrapper sqrtf */ + float x; +#endif +{ +#ifdef _IEEE_LIBM + return __ieee754_sqrtf(x); +#else + float z; + struct exception exc; + z = __ieee754_sqrtf(x); + if(_LIB_VERSION == _IEEE_ || isnanf(x)) return z; + if(x<(float)0.0) { + /* sqrtf(negative) */ + exc.type = DOMAIN; + exc.name = "sqrtf"; + exc.err = 0; + exc.arg1 = exc.arg2 = (double)x; + if (_LIB_VERSION == _SVID_) + exc.retval = 0.0; + else + exc.retval = 0.0/0.0; + 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 sqrt(double x) +#else + double sqrt(x) + double x; +#endif +{ + return (double) sqrtf((float) x); +} + +#endif /* defined(_DOUBLE_IS_32BITS) */ -- cgit v1.2.3