s_fabs.c 695 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. #ifndef lint
  13. static char rcsid[] = "$FreeBSD$";
  14. #endif
  15. /*
  16. * fabs(x) returns the absolute value of x.
  17. */
  18. #include <openlibm_math.h>
  19. #include "math_private.h"
  20. double
  21. fabs(double x)
  22. {
  23. u_int32_t high;
  24. GET_HIGH_WORD(high,x);
  25. SET_HIGH_WORD(x,high&0x7fffffff);
  26. return x;
  27. }