release/src-rt-6.x/linux/linux-2.6/arch/powerpc/math-emu/fsqrts.c

   1 #include <linux/types.h>
   2 #include <linux/errno.h>
   3 #include <asm/uaccess.h>
   4
   5 #include "soft-fp.h"
   6 #include "double.h"
   7 #include "single.h"
   8
   9 int
  10 fsqrts(void *frD, void *frB)
  11 {
  12         FP_DECL_D(B);
  13         FP_DECL_D(R);
  14         int ret = 0;
  15
  16 #ifdef DEBUG
  17         printk("%s: %p %p %p %p\n", __FUNCTION__, frD, frB);
  18 #endif
  19
  20         __FP_UNPACK_D(B, frB);
  21
  22 #ifdef DEBUG
  23         printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c);
  24 #endif
  25
  26         if (B_s && B_c != FP_CLS_ZERO)
  27                 ret |= EFLAG_VXSQRT;
  28         if (B_c == FP_CLS_NAN)
  29                 ret |= EFLAG_VXSNAN;
  30
  31         FP_SQRT_D(R, B);
  32
  33 #ifdef DEBUG
  34         printk("R: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c);
  35 #endif
  36
  37         return (ret | __FP_PACK_DS(frD, R));
  38 }