Print this page




  69          * If VIS 3.0 instructions are available, use this:
  70          *
  71          * flcmps       %fcc0,%f0,%f1
  72          * fmovsge      %fcc0,%f1,%f0   ! move if %fcc0 is 0 or 2
  73          */
  74 
  75         union {
  76                 unsigned i;
  77                 float f;
  78         } xx, yy;
  79         unsigned s;
  80 
  81         /* if y is nan, replace it by x */
  82         if (y != y)
  83                 y = x;
  84 
  85         /* if x is nan, replace it by y */
  86         if (x != x)
  87                 x = y;
  88 
  89 /* if x is greater than y or x and y are unordered, replace x by y */
  90 #if defined(COMPARISON_MACRO_BUG)
  91         if (x > y)
  92 #else
  93         if (!islessequal(x, y))
  94 #endif
  95                 x = y;
  96 
  97         /*
  98          * now x and y are either both NaN or both numeric; set the
  99          * sign of the result if either x or y has its sign set
 100          */
 101         xx.f = x;
 102         yy.f = y;
 103         s = (xx.i | yy.i) & 0x80000000;
 104         xx.i |= s;
 105 
 106         return (xx.f);
 107 }


  69          * If VIS 3.0 instructions are available, use this:
  70          *
  71          * flcmps       %fcc0,%f0,%f1
  72          * fmovsge      %fcc0,%f1,%f0   ! move if %fcc0 is 0 or 2
  73          */
  74 
  75         union {
  76                 unsigned i;
  77                 float f;
  78         } xx, yy;
  79         unsigned s;
  80 
  81         /* if y is nan, replace it by x */
  82         if (y != y)
  83                 y = x;
  84 
  85         /* if x is nan, replace it by y */
  86         if (x != x)
  87                 x = y;
  88 
  89         /* At this point, x and y are either both numeric, or both NaN */
  90         if (!isnan(x) && !islessequal(x, y))




  91                 x = y;
  92 
  93         /*
  94          * set the sign of the result if either x or y has its sign set

  95          */
  96         xx.f = x;
  97         yy.f = y;
  98         s = (xx.i | yy.i) & 0x80000000;
  99         xx.i |= s;
 100 
 101         return (xx.f);
 102 }