--- old/usr/src/lib/libm/common/LD/__rem_pio2l.c
          +++ new/usr/src/lib/libm/common/LD/__rem_pio2l.c

   1    1  /*
   2    2   * CDDL HEADER START
   3    3   *
   4    4   * The contents of this file are subject to the terms of the
   5    5   * Common Development and Distribution License (the "License").
   6    6   * You may not use this file except in compliance with the License.
   7    7   *
   8    8   * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9    9   * or http://www.opensolaris.org/os/licensing.
  10   10   * See the License for the specific language governing permissions
  11   11   * and limitations under the License.
  12   12   *
  13   13   * When distributing Covered Code, include this CDDL HEADER in each
  14   14   * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15   15   * If applicable, add the following below this CDDL HEADER, with the
  16   16   * fields enclosed by brackets "[]" replaced with your own identifying
  17   17   * information: Portions Copyright [yyyy] [name of copyright owner]
  18   18   *
  19   19   * CDDL HEADER END
  20   20   */
  21   21  
  22   22  /*
  23   23   * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
  24   24   */
  25   25  /*
  26   26   * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.

  27   27   * Use is subject to license terms.
  28   28   */
  29   29  
  30   30  /* __rem_pio2l(x,y)
  31   31   *
  32   32   * return the remainder of x rem pi/2 in y[0]+y[1]
  33   33   * by calling __rem_pio2m
  34   34   */
  35   35  
  36   36  #include "libm.h"
  37      -
  38   37  #include "longdouble.h"
  39   38  
  40   39  extern const int _TBL_ipio2l_inf[];
  41   40  
  42   41  static const long double
  43   42      two24l = 16777216.0L,
  44   43      pio4   = 0.7853981633974483096156608458198757210495L;
  45   44  
  46   45  int
  47   46  __rem_pio2l(long double x, long double *y)

  48   47  {
  49   48          long double     z, w;
  50   49          double          t[3], v[5];
  51   50          int             e0, i, nx, n, sign;
  52   51  
  53   52          sign = signbitl(x);
  54   53          z = fabsl(x);
  55   54          if (z <= pio4) {
  56   55                  y[0] = x;
  57   56                  y[1] = 0;
  58   57                  return (0);
  59   58          }
  60   59          e0 = ilogbl(z) - 23;
  61   60          z = scalbnl(z, -e0);
  62   61          for (i = 0; i < 3; i++) {
  63   62                  t[i] = (double)((int)(z));
  64   63                  z = (z - (long double)t[i]) * two24l;
  65   64          }
  66   65          nx = 3;
  67   66          while (t[nx-1] == 0.0)
  68   67                  nx--;   /* omit trailing zeros */
  69   68          n = __rem_pio2m(t, v, e0, nx, 2, _TBL_ipio2l_inf);
  70   69          z = (long double)v[1];
  71   70          w = (long double)v[0];
  72   71          y[0] = z + w;
  73   72          y[1] = z - (y[0] - w);
  74   73          if (sign == 1) {
  75   74                  y[0] = -y[0];
  76   75                  y[1] = -y[1];
  77   76                  return (-n);
  78   77          }
  79   78          return (n);
  80   79  }

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