w_hypotf.c (1054B)
1 /* w_hypotf.c -- float version of w_hypot.c. 2 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com. 3 */ 4 5 /* 6 * ==================================================== 7 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. 8 * 9 * Developed at SunPro, a Sun Microsystems, Inc. business. 10 * Permission to use, copy, modify, and distribute this 11 * software is freely granted, provided that this notice 12 * is preserved. 13 * ==================================================== 14 */ 15 16 #ifndef lint 17 static char rcsid[] = "$FreeBSD: src/lib/msun/src/w_hypotf.c,v 1.7 2002/05/28 18:15:04 alfred Exp $"; 18 #endif 19 20 /* 21 * wrapper hypotf(x,y) 22 */ 23 24 #include "math.h" 25 #include "math_private.h" 26 27 28 float 29 hypotf(float x, float y) /* wrapper hypotf */ 30 { 31 #ifdef _IEEE_LIBM 32 return __ieee754_hypotf(x,y); 33 #else 34 float z; 35 z = __ieee754_hypotf(x,y); 36 if(_LIB_VERSION == _IEEE_) return z; 37 if((!finitef(z))&&finitef(x)&&finitef(y)) 38 /* hypot overflow */ 39 return (float)__kernel_standard((double)x,(double)y,104); 40 else 41 return z; 42 #endif 43 }