s_fabs.c 759 B

123456789101112131415161718192021222324252627282930
  1. #include "SDL_internal.h"
  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. /*
  13. * fabs(x) returns the absolute value of x.
  14. */
  15. /*#include <features.h>*/
  16. /* Prevent math.h from defining a colliding inline */
  17. #undef __USE_EXTERN_INLINES
  18. #include "math_libm.h"
  19. #include "math_private.h"
  20. double fabs(double x)
  21. {
  22. u_int32_t high;
  23. GET_HIGH_WORD(high,x);
  24. SET_HIGH_WORD(x,high&0x7fffffff);
  25. return x;
  26. }
  27. libm_hidden_def(fabs)