diff options
Diffstat (limited to 'lib/msun/src/w_sqrt.c')
| -rw-r--r-- | lib/msun/src/w_sqrt.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/lib/msun/src/w_sqrt.c b/lib/msun/src/w_sqrt.c new file mode 100644 index 0000000000000..b0282bc028f40 --- /dev/null +++ b/lib/msun/src/w_sqrt.c @@ -0,0 +1,41 @@ +/* @(#)w_sqrt.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. + * ==================================================== + */ + +#ifndef lint +static char rcsid[] = "$Id: w_sqrt.c,v 1.1.1.1 1994/05/06 00:20:14 gclarkii Exp $"; +#endif + +/* + * wrapper sqrt(x) + */ + +#include "math.h" + +#ifdef __STDC__ + double sqrt(double x) /* wrapper sqrt */ +#else + double sqrt(x) /* wrapper sqrt */ + double x; +#endif +{ +#ifdef _IEEE_LIBM + return __ieee754_sqrt(x); +#else + double z; + z = __ieee754_sqrt(x); + if(_LIB_VERSION == _IEEE_ || isnan(x)) return z; + if(x<0.0) { + return __kernel_standard(x,x,26); /* sqrt(negative) */ + } else + return z; +#endif +} |