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11210 libm should be cstyle(1ONBLD) clean

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          --- old/usr/src/lib/libm/common/C/acos.c
          +++ new/usr/src/lib/libm/common/C/acos.c
↓ open down ↓ 14 lines elided ↑ open up ↑
  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   27   * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  27   28   * Use is subject to license terms.
  28   29   */
  29   30  
  30   31  #pragma weak __acos = acos
  31   32  
  32      -/* INDENT OFF */
       33 +
  33   34  /*
  34   35   * acos(x)
  35   36   * Method :
  36   37   *      acos(x)  = pi/2 - asin(x)
  37   38   *      acos(-x) = pi/2 + asin(x)
  38   39   * For |x|<=0.5
  39   40   *      acos(x) = pi/2 - (x + x*x^2*R(x^2))     (see asin.c)
  40   41   * For x>0.5
  41      - *      acos(x) = pi/2 - (pi/2 - 2asin(sqrt((1-x)/2)))
       42 + *      acos(x) = pi/2 - (pi/2 - 2asin(sqrt((1-x)/2)))
  42   43   *              = 2asin(sqrt((1-x)/2))
  43      - *              = 2s + 2s*z*R(z)        ...z=(1-x)/2, s=sqrt(z)
       44 + *              = 2s + 2s*z*R(z)        ...z=(1-x)/2, s=sqrt(z)
  44   45   *              = 2f + (2c + 2s*z*R(z))
  45   46   *     where f=hi part of s, and c = (z-f*f)/(s+f) is the correction term
  46   47   *     for f so that f+c ~ sqrt(z).
  47   48   * For x<-0.5
  48   49   *      acos(x) = pi - 2asin(sqrt((1-|x|)/2))
  49   50   *              = pi - 0.5*(s+s*z*R(z)), where z=(1-|x|)/2,s=sqrt(z)
  50   51   *
  51   52   * Special cases:
  52   53   *      if x is NaN, return x itself;
  53   54   *      if |x|>1, return NaN with invalid signal.
  54   55   *
  55   56   * Function needed: sqrt
  56   57   */
  57      -/* INDENT ON */
  58   58  
  59      -#include "libm_protos.h"        /* _SVID_libm_error */
       59 +#include "libm_protos.h"                /* _SVID_libm_error */
  60   60  #include "libm_macros.h"
  61   61  #include <math.h>
  62   62  
  63      -/* INDENT OFF */
  64   63  static const double xxx[] = {
  65      -/* one */        1.00000000000000000000e+00,    /* 3FF00000, 00000000 */
  66      -/* pi */         3.14159265358979311600e+00,    /* 400921FB, 54442D18 */
  67      -/* pio2_hi */    1.57079632679489655800e+00,    /* 3FF921FB, 54442D18 */
  68      -/* pio2_lo */    6.12323399573676603587e-17,    /* 3C91A626, 33145C07 */
  69      -/* pS0 */        1.66666666666666657415e-01,    /* 3FC55555, 55555555 */
  70      -/* pS1 */       -3.25565818622400915405e-01,    /* BFD4D612, 03EB6F7D */
  71      -/* pS2 */        2.01212532134862925881e-01,    /* 3FC9C155, 0E884455 */
  72      -/* pS3 */       -4.00555345006794114027e-02,    /* BFA48228, B5688F3B */
  73      -/* pS4 */        7.91534994289814532176e-04,    /* 3F49EFE0, 7501B288 */
  74      -/* pS5 */        3.47933107596021167570e-05,    /* 3F023DE1, 0DFDF709 */
  75      -/* qS1 */       -2.40339491173441421878e+00,    /* C0033A27, 1C8A2D4B */
  76      -/* qS2 */        2.02094576023350569471e+00,    /* 40002AE5, 9C598AC8 */
  77      -/* qS3 */       -6.88283971605453293030e-01,    /* BFE6066C, 1B8D0159 */
  78      -/* qS4 */        7.70381505559019352791e-02     /* 3FB3B8C5, B12E9282 */
       64 +/* one */
       65 +        1.00000000000000000000e+00,             /* 3FF00000, 00000000 */
       66 +/* pi */ 3.14159265358979311600e+00,            /* 400921FB, 54442D18 */
       67 +/* pio2_hi */ 1.57079632679489655800e+00,       /* 3FF921FB, 54442D18 */
       68 +/* pio2_lo */ 6.12323399573676603587e-17,       /* 3C91A626, 33145C07 */
       69 +/* pS0 */ 1.66666666666666657415e-01,           /* 3FC55555, 55555555 */
       70 +/* pS1 */ -3.25565818622400915405e-01,          /* BFD4D612, 03EB6F7D */
       71 +/* pS2 */ 2.01212532134862925881e-01,           /* 3FC9C155, 0E884455 */
       72 +/* pS3 */ -4.00555345006794114027e-02,          /* BFA48228, B5688F3B */
       73 +/* pS4 */ 7.91534994289814532176e-04,           /* 3F49EFE0, 7501B288 */
       74 +/* pS5 */ 3.47933107596021167570e-05,           /* 3F023DE1, 0DFDF709 */
       75 +/* qS1 */ -2.40339491173441421878e+00,          /* C0033A27, 1C8A2D4B */
       76 +/* qS2 */ 2.02094576023350569471e+00,           /* 40002AE5, 9C598AC8 */
       77 +/* qS3 */ -6.88283971605453293030e-01,          /* BFE6066C, 1B8D0159 */
       78 +/* qS4 */ 7.70381505559019352791e-02            /* 3FB3B8C5, B12E9282 */
  79   79  };
  80      -#define one     xxx[0]
  81      -#define pi      xxx[1]
  82      -#define pio2_hi xxx[2]
  83      -#define pio2_lo xxx[3]
  84      -#define pS0     xxx[4]
  85      -#define pS1     xxx[5]
  86      -#define pS2     xxx[6]
  87      -#define pS3     xxx[7]
  88      -#define pS4     xxx[8]
  89      -#define pS5     xxx[9]
  90      -#define qS1     xxx[10]
  91      -#define qS2     xxx[11]
  92      -#define qS3     xxx[12]
  93      -#define qS4     xxx[13]
  94      -/* INDENT ON */
       80 +
       81 +#define one             xxx[0]
       82 +#define pi              xxx[1]
       83 +#define pio2_hi         xxx[2]
       84 +#define pio2_lo         xxx[3]
       85 +#define pS0             xxx[4]
       86 +#define pS1             xxx[5]
       87 +#define pS2             xxx[6]
       88 +#define pS3             xxx[7]
       89 +#define pS4             xxx[8]
       90 +#define pS5             xxx[9]
       91 +#define qS1             xxx[10]
       92 +#define qS2             xxx[11]
       93 +#define qS3             xxx[12]
       94 +#define qS4             xxx[13]
  95   95  
  96   96  double
  97      -acos(double x) {
       97 +acos(double x)
       98 +{
  98   99          double z, p, q, r, w, s, c, df;
  99  100          int hx, ix;
 100  101  
 101      -        hx = ((int *) &x)[HIWORD];
      102 +        hx = ((int *)&x)[HIWORD];
 102  103          ix = hx & 0x7fffffff;
 103      -        if (ix >= 0x3ff00000) { /* |x| >= 1 */
 104      -                if (((ix - 0x3ff00000) | ((int *) &x)[LOWORD]) == 0) {
      104 +
      105 +        if (ix >= 0x3ff00000) {         /* |x| >= 1 */
      106 +                if (((ix - 0x3ff00000) | ((int *)&x)[LOWORD]) == 0) {
 105  107                          /* |x| == 1 */
 106  108                          if (hx > 0)     /* acos(1) = 0 */
 107  109                                  return (0.0);
 108  110                          else            /* acos(-1) = pi */
 109  111                                  return (pi + 2.0 * pio2_lo);
 110      -                } else if (isnan(x))
      112 +                } else if (isnan(x)) {
 111  113  #if defined(FPADD_TRAPS_INCOMPLETE_ON_NAN)
 112  114                          return (ix >= 0x7ff80000 ? x : (x - x) / (x - x));
 113      -                        /* assumes sparc-like QNaN */
      115 +                /* assumes sparc-like QNaN */
 114  116  #else
 115      -                        return (x - x) / (x - x);       /* acos(|x|>1) is NaN */
      117 +                        return ((x - x) / (x - x));     /* acos(|x|>1) is NaN */
 116  118  #endif
 117      -                else
      119 +                } else {
 118  120                          return (_SVID_libm_err(x, x, 1));
      121 +                }
 119  122          }
 120      -        if (ix < 0x3fe00000) {  /* |x| < 0.5 */
      123 +
      124 +        if (ix < 0x3fe00000) {                          /* |x| < 0.5 */
 121  125                  if (ix <= 0x3c600000)
 122  126                          return (pio2_hi + pio2_lo);     /* if |x| < 2**-57 */
      127 +
 123  128                  z = x * x;
 124      -                p = z * (pS0 + z * (pS1 + z * (pS2 + z * (pS3 +
 125      -                        z * (pS4 + z * pS5)))));
      129 +                p = z * (pS0 + z * (pS1 + z * (pS2 + z * (pS3 + z * (pS4 + z *
      130 +                    pS5)))));
 126  131                  q = one + z * (qS1 + z * (qS2 + z * (qS3 + z * qS4)));
 127  132                  r = p / q;
 128  133                  return (pio2_hi - (x - (pio2_lo - x * r)));
 129  134          } else if (hx < 0) {
 130  135                  /* x < -0.5 */
 131  136                  z = (one + x) * 0.5;
 132      -                p = z * (pS0 + z * (pS1 + z * (pS2 + z * (pS3 +
 133      -                        z * (pS4 + z * pS5)))));
      137 +                p = z * (pS0 + z * (pS1 + z * (pS2 + z * (pS3 + z * (pS4 + z *
      138 +                    pS5)))));
 134  139                  q = one + z * (qS1 + z * (qS2 + z * (qS3 + z * qS4)));
 135  140                  s = sqrt(z);
 136  141                  r = p / q;
 137  142                  w = r * s - pio2_lo;
 138  143                  return (pi - 2.0 * (s + w));
 139  144          } else {
 140  145                  /* x > 0.5 */
 141  146                  z = (one - x) * 0.5;
 142  147                  s = sqrt(z);
 143  148                  df = s;
 144      -                ((int *) &df)[LOWORD] = 0;
      149 +                ((int *)&df)[LOWORD] = 0;
 145  150                  c = (z - df * df) / (s + df);
 146      -                p = z * (pS0 + z * (pS1 + z * (pS2 + z * (pS3 +
 147      -                        z * (pS4 + z * pS5)))));
      151 +                p = z * (pS0 + z * (pS1 + z * (pS2 + z * (pS3 + z * (pS4 + z *
      152 +                    pS5)))));
 148  153                  q = one + z * (qS1 + z * (qS2 + z * (qS3 + z * qS4)));
 149  154                  r = p / q;
 150  155                  w = r * s + c;
 151  156                  return (2.0 * (df + w));
 152  157          }
 153  158  }
    
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