diff options
Diffstat (limited to 'src/lib/libc/fdlibm/w_sqrt.c')
-rw-r--r-- | src/lib/libc/fdlibm/w_sqrt.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/lib/libc/fdlibm/w_sqrt.c b/src/lib/libc/fdlibm/w_sqrt.c new file mode 100644 index 0000000..4dd589e --- /dev/null +++ b/src/lib/libc/fdlibm/w_sqrt.c @@ -0,0 +1,38 @@ + +/* @(#)w_sqrt.c 1.3 95/01/18 */ +/* + * ==================================================== + * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. + * + * Developed at SunSoft, a Sun Microsystems, Inc. business. + * Permission to use, copy, modify, and distribute this + * software is freely granted, provided that this notice + * is preserved. + * ==================================================== + */ + +/* + * wrapper sqrt(x) + */ + +#include "fdlibm.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 +} |