s_fabs.c 815 B

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  1. /* @(#)s_fabs.c 5.1 93/09/24 */
  2. /*
  3. * ====================================================
  4. * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
  5. *
  6. * Developed at SunPro, a Sun Microsystems, Inc. business.
  7. * Permission to use, copy, modify, and distribute this
  8. * software is freely granted, provided that this notice
  9. * is preserved.
  10. * ====================================================
  11. */
  12. #if defined(LIBM_SCCS) && !defined(lint)
  13. static char rcsid[] = "$NetBSD: s_fabs.c,v 1.7 1995/05/10 20:47:13 jtc Exp $";
  14. #endif
  15. /*
  16. * fabs(x) returns the absolute value of x.
  17. */
  18. #include "math.h"
  19. #include "math_private.h"
  20. #ifdef __STDC__
  21. double fabs(double x)
  22. #else
  23. double fabs(x)
  24. double x;
  25. #endif
  26. {
  27. u_int32_t high;
  28. GET_HIGH_WORD(high,x);
  29. SET_HIGH_WORD(x,high&0x7fffffff);
  30. return x;
  31. }