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  1. /* wf_sinh.c -- float version of w_sinh.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 sinhf(x)
  18.  */
  19.  
  20. #include "fdlibm.h"
  21. #include <errno.h>
  22.  
  23. #ifdef __STDC__
  24.         float sinhf(float x)            /* wrapper sinhf */
  25. #else
  26.         float sinhf(x)                  /* wrapper sinhf */
  27.         float x;
  28. #endif
  29. {
  30. #ifdef _IEEE_LIBM
  31.         return __ieee754_sinhf(x);
  32. #else
  33.         float z;
  34.         struct exception exc;
  35.         z = __ieee754_sinhf(x);
  36.         if(_LIB_VERSION == _IEEE_) return z;
  37.         if(!finitef(z)&&finitef(x)) {
  38.             /* sinhf(finite) overflow */
  39. #ifndef HUGE_VAL
  40. #define HUGE_VAL inf
  41.             double inf = 0.0;
  42.            
  43.             SET_HIGH_WORD(inf,0x7ff00000);      /* set inf to infinite */
  44. #endif
  45.             exc.type = OVERFLOW;
  46.             exc.name = "sinhf";
  47.             exc.err = 0;
  48.             exc.arg1 = exc.arg2 = (double)x;
  49.             if (_LIB_VERSION == _SVID_)
  50.                exc.retval = ( (x>0.0) ? HUGE : -HUGE);
  51.             else
  52.                exc.retval = ( (x>0.0) ? HUGE_VAL : -HUGE_VAL);
  53.             if (_LIB_VERSION == _POSIX_)
  54.                errno = ERANGE;
  55.             else if (!matherr(&exc)) {
  56.                errno = ERANGE;
  57.             }
  58.             if (exc.err != 0)
  59.                errno = exc.err;
  60.             return (float)exc.retval;
  61.         } else
  62.             return z;
  63. #endif
  64. }
  65.  
  66. #ifdef _DOUBLE_IS_32BITS
  67.  
  68. #ifdef __STDC__
  69.         double sinh(double x)
  70. #else
  71.         double sinh(x)
  72.         double x;
  73. #endif
  74. {
  75.         return (double) sinhf((float) x);
  76. }
  77.  
  78. #endif /* defined(_DOUBLE_IS_32BITS) */
  79.