arch/powerpc/math-emu/fsel.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
   8 int
   9 fsel(u32 *frD, void *frA, u32 *frB, u32 *frC)
  10 {
  11         FP_DECL_D(A);
  12
  13 #ifdef DEBUG
  14         printk("%s: %p %p %p %p\n", __FUNCTION__, frD, frA, frB, frC);
  15 #endif
  16
  17         __FP_UNPACK_D(A, frA);
  18
  19 #ifdef DEBUG
  20         printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c);
  21         printk("B: %08x %08x\n", frB[0], frB[1]);
  22         printk("C: %08x %08x\n", frC[0], frC[1]);
  23 #endif
  24
  25         if (A_c == FP_CLS_NAN || (A_c != FP_CLS_ZERO && A_s)) {
  26                 frD[0] = frB[0];
  27                 frD[1] = frB[1];
  28         } else {
  29                 frD[0] = frC[0];
  30                 frD[1] = frC[1];
  31         }
  32
  33 #ifdef DEBUG
  34         printk("D: %08x.%08x\n", frD[0], frD[1]);
  35 #endif
  36
  37         return 0;
  38 }