w_hypotl_compat.c 1002 B

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  1. /* w_hypotl.c -- long double version of w_hypot.c.
  2. * Conversion to long double by Ulrich Drepper,
  3. * Cygnus Support, drepper@cygnus.com.
  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. * wrapper hypotl(x,y)
  17. */
  18. #include <math.h>
  19. #include <math_private.h>
  20. #include <math-svid-compat.h>
  21. #include <libm-alias-ldouble.h>
  22. #if LIBM_SVID_COMPAT
  23. long double
  24. __hypotl(long double x, long double y)
  25. {
  26. long double z;
  27. z = __ieee754_hypotl(x,y);
  28. if(__builtin_expect(!isfinite(z), 0)
  29. && isfinite(x) && isfinite(y) && _LIB_VERSION != _IEEE_)
  30. return __kernel_standard_l(x, y, 204); /* hypot overflow */
  31. return z;
  32. }
  33. libm_alias_ldouble (__hypot, hypot)
  34. #endif