Imported gcc-4.4.3

[msp430-gcc.git] / gcc / testsuite / gcc.c-torture / execute / cbrt.c

diff --git a/gcc/testsuite/gcc.c-torture/execute/cbrt.c b/gcc/testsuite/gcc.c-torture/execute/cbrt.c
deleted file mode 100644 (file)
index 8659cc7..0000000
--- a/gcc/testsuite/gcc.c-torture/execute/cbrt.c
+++ /dev/null
@@ -1,92 +0,0 @@
-/*
- * ====================================================
- * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
- *
- * Developed at SunPro, a Sun Microsystems, Inc. business.
- * Permission to use, copy, modify, and distribute this
- * software is freely granted, provided that this notice
- * is preserved.
- * ====================================================
-*/
-
-#ifndef __vax__
-static const unsigned long
-       B1 = 715094163, /* B1 = (682-0.03306235651)*2**20 */
-       B2 = 696219795; /* B2 = (664-0.03306235651)*2**20 */
-
-static const double
-       C =  5.42857142857142815906e-01, /* 19/35     = 0x3FE15F15, 0xF15F15F1 */
-       D = -7.05306122448979611050e-01, /* -864/1225 = 0xBFE691DE, 0x2532C834 */
-       E =  1.41428571428571436819e+00, /* 99/70     = 0x3FF6A0EA, 0x0EA0EA0F */
-       F =  1.60714285714285720630e+00, /* 45/28     = 0x3FF9B6DB, 0x6DB6DB6E */
-       G =  3.57142857142857150787e-01; /* 5/14      = 0x3FD6DB6D, 0xB6DB6DB7 */
-
-double
-cbrtl (double x)
-{
-  long hx;
-  double r,s,w;
-  double lt;
-  unsigned sign;
-  typedef unsigned unsigned32 __attribute__((mode(SI)));
-  union {
-    double t;
-    unsigned32 pt[2];
-  } ut, ux;
-  int n0;
-
-  ut.t = 1.0;
-  n0 = (ut.pt[0] == 0);
-
-  ut.t = 0.0;
-  ux.t = x;
-
-  hx = ux.pt[n0];                      /* high word of x */
-  sign=hx&0x80000000;                  /* sign= sign(x) */
-  hx  ^=sign;
-  if(hx>=0x7ff00000) return(x+x);      /* cbrt(NaN,INF) is itself */
-  if((hx| ux.pt[1-n0])==0)
-    return(ux.t);                      /* cbrt(0) is itself */
-
-  ux.pt[n0] = hx;
-  /* rough cbrt to 5 bits */
-  if(hx<0x00100000)                    /* subnormal number */
-    {ut.pt[n0]=0x43500000;             /* set t= 2**54 */
-     ut.t*=x; ut.pt[n0]=ut.pt[n0]/3+B2;
-   }
-  else
-    ut.pt[n0]=hx/3+B1;
-
-  /* new cbrt to 23 bits, may be implemented in single precision */
-  r=ut.t*ut.t/ux.t;
-  s=C+r*ut.t;
-  ut.t*=G+F/(s+E+D/s);
-
-  /* chopped to 20 bits and make it larger than cbrt(x) */
-  ut.pt[1-n0]=0; ut.pt[n0]+=0x00000001;
-
-  /* one step newton iteration to 53 bits with error less than 0.667 ulps */
-  s=ut.t*ut.t;                         /* t*t is exact */
-  r=ux.t/s;
-  w=ut.t+ut.t;
-  r=(r-ut.t)/(w+r);                    /* r-s is exact */
-  ut.t=ut.t+ut.t*r;
-
-  /* restore the sign bit */
-  ut.pt[n0] |= sign;
-
-  lt = ut.t;
-  lt -= (lt - (x/(lt*lt))) * 0.333333333333333333333;
-  return lt;
-}
-
-main ()
-{
-  if ((int) (cbrtl (27.0) + 0.5) != 3)
-    abort ();
-
-  exit (0);
-}
-#else
-main () { exit (0); }
-#endif