math/w_hypotf_compat.c

   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 /*
  17  * wrapper hypotf(x,y)
  18  */
  19
  20 #include <math.h>
  21 #include <math_private.h>
  22 #include <math-svid-compat.h>
  23 #include <libm-alias-float.h>
  24
  25
  26 #if LIBM_SVID_COMPAT
  27 float
  28 __hypotf(float x, float y)
  29 {
  30         float z = __ieee754_hypotf(x,y);
  31         if(__builtin_expect(!isfinite(z), 0)
  32            && isfinite(x) && isfinite(y) && _LIB_VERSION != _IEEE_)
  33             /* hypot overflow */
  34             return __kernel_standard_f(x, y, 104);
  35
  36         return z;
  37 }
  38 libm_alias_float (__hypot, hypot)
  39 #endif