Use glibc_likely instead __builtin_expect.

[thirdparty/glibc.git] / sysdeps / ieee754 / dbl-64 / e_sinh.c

diff --git a/sysdeps/ieee754/dbl-64/e_sinh.c b/sysdeps/ieee754/dbl-64/e_sinh.c
index 1701b9bb6708d38f92067d8e70a85d8d0e06ffa5..4ff28bf85dff8afc33f9b154d06ef26bb002a650 100644 (file)
--- a/sysdeps/ieee754/dbl-64/e_sinh.c
+++ b/sysdeps/ieee754/dbl-64/e_sinh.c
@@ -5,7 +5,7 @@
  *
  * Developed at SunPro, a Sun Microsystems, Inc. business.
  * Permission to use, copy, modify, and distribute this
- * software is freely granted, provided that this notice 
+ * software is freely granted, provided that this notice
  * is preserved.
  * ====================================================
  */
@@ -15,15 +15,15 @@ static char rcsid[] = "$NetBSD: e_sinh.c,v 1.7 1995/05/10 20:46:13 jtc Exp $";
 #endif
 
 /* __ieee754_sinh(x)
- * Method : 
+ * Method :
  * mathematically sinh(x) if defined to be (exp(x)-exp(-x))/2
- *     1. Replace x by |x| (sinh(-x) = -sinh(x)). 
- *     2. 
- *                                                 E + E/(E+1)
+ *     1. Replace x by |x| (sinh(-x) = -sinh(x)).
+ *     2.
+ *                                                 E + E/(E+1)
  *         0        <= x <= 22     :  sinh(x) := --------------, E=expm1(x)
- *                                                     2
+ *                                                     2
  *
- *         22       <= x <= lnovft :  sinh(x) := exp(x)/2 
+ *         22       <= x <= lnovft :  sinh(x) := exp(x)/2
  *         lnovft   <= x <= ln2ovft:  sinh(x) := exp(x/2)/2 * exp(x/2)
  *         ln2ovft  <  x           :  sinh(x) := x*shuge (overflow)
  *
@@ -32,55 +32,56 @@ static char rcsid[] = "$NetBSD: e_sinh.c,v 1.7 1995/05/10 20:46:13 jtc Exp $";
  *     only sinh(0)=0 is exact for finite x.
  */
 
-#include "math.h"
-#include "math_private.h"
+#include <math.h>
+#include <math_private.h>
 
-#ifdef __STDC__
 static const double one = 1.0, shuge = 1.0e307;
-#else
-static double one = 1.0, shuge = 1.0e307;
-#endif
 
-#ifdef __STDC__
-       double __ieee754_sinh(double x)
-#else
-       double __ieee754_sinh(x)
-       double x;
-#endif
-{      
-       double t,w,h;
-       int32_t ix,jx;
-       u_int32_t lx;
+double
+__ieee754_sinh (double x)
+{
+  double t, w, h;
+  int32_t ix, jx;
+  u_int32_t lx;
 
-    /* High word of |x|. */
-       GET_HIGH_WORD(jx,x);
-       ix = jx&0x7fffffff;
+  /* High word of |x|. */
+  GET_HIGH_WORD (jx, x);
+  ix = jx & 0x7fffffff;
 
-    /* x is INF or NaN */
-       if(ix>=0x7ff00000) return x+x;  
+  /* x is INF or NaN */
+  if (__glibc_unlikely (ix >= 0x7ff00000))
+    return x + x;
 
-       h = 0.5;
-       if (jx<0) h = -h;
-    /* |x| in [0,22], return sign(x)*0.5*(E+E/(E+1))) */
-       if (ix < 0x40360000) {          /* |x|<22 */
-           if (ix<0x3e300000)          /* |x|<2**-28 */
-               if(shuge+x>one) return x;/* sinh(tiny) = tiny with inexact */
-           t = __expm1(fabs(x));
-           if(ix<0x3ff00000) return h*(2.0*t-t*t/(t+one));
-           return h*(t+t/(t+one));
-       }
+  h = 0.5;
+  if (jx < 0)
+    h = -h;
+  /* |x| in [0,22], return sign(x)*0.5*(E+E/(E+1))) */
+  if (ix < 0x40360000)                  /* |x|<22 */
+    {
+      if (__glibc_unlikely (ix < 0x3e300000))              /* |x|<2**-28 */
+       if (shuge + x > one)
+         return x;
+      /* sinh(tiny) = tiny with inexact */
+      t = __expm1 (fabs (x));
+      if (ix < 0x3ff00000)
+       return h * (2.0 * t - t * t / (t + one));
+      return h * (t + t / (t + one));
+    }
 
-    /* |x| in [22, log(maxdouble)] return 0.5*exp(|x|) */
-       if (ix < 0x40862e42)  return h*__ieee754_exp(fabs(x));
+  /* |x| in [22, log(maxdouble)] return 0.5*exp(|x|) */
+  if (ix < 0x40862e42)
+    return h * __ieee754_exp (fabs (x));
 
-    /* |x| in [log(maxdouble), overflowthresold] */
-       GET_LOW_WORD(lx,x);
-       if (ix<0x408633ce || ((ix==0x408633ce)&&(lx<=(u_int32_t)0x8fb9f87d))) {
-           w = __ieee754_exp(0.5*fabs(x));
-           t = h*w;
-           return t*w;
-       }
+  /* |x| in [log(maxdouble), overflowthresold] */
+  GET_LOW_WORD (lx, x);
+  if (ix < 0x408633ce || ((ix == 0x408633ce) && (lx <= (u_int32_t) 0x8fb9f87d)))
+    {
+      w = __ieee754_exp (0.5 * fabs (x));
+      t = h * w;
+      return t * w;
+    }
 
-    /* |x| > overflowthresold, sinh(x) overflow */
-       return x*shuge;
+  /* |x| > overflowthresold, sinh(x) overflow */
+  return x * shuge;
 }
+strong_alias (__ieee754_sinh, __sinh_finite)