arch/ppc/math-emu/fsqrts.c

   1 /* $Id: fsqrts.c,v 1.1 1999/08/23 19:00:03 cort Exp $
   2  */
   3
   4 #include <linux/types.h>
   5 #include <linux/errno.h>
   6 #include <asm/uaccess.h>
   7
   8 #include "soft-fp.h"
   9 #include "double.h"
  10 #include "single.h"
  11
  12 int
  13 fsqrts(void *frD, void *frB)
  14 {
  15         FP_DECL_D(B);
  16         FP_DECL_D(R);
  17         int ret = 0;
  18
  19 #ifdef DEBUG
  20         printk("%s: %p %p %p %p\n", __FUNCTION__, frD, frB);
  21 #endif
  22
  23         __FP_UNPACK_D(B, frB);
  24
  25 #ifdef DEBUG
  26         printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c);
  27 #endif
  28
  29         if (B_s && B_c != FP_CLS_ZERO)
  30                 ret |= EFLAG_VXSQRT;
  31         if (B_c == FP_CLS_NAN)
  32                 ret |= EFLAG_VXSNAN;
  33
  34         FP_SQRT_D(R, B);
  35
  36 #ifdef DEBUG
  37         printk("R: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c);
  38 #endif
  39
  40         return (ret | __FP_PACK_DS(frD, R));
  41 }