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stfs.c

#include <linux/types.h>
#include <linux/errno.h>
#include <asm/uaccess.h>

#include "soft-fp.h"
#include "double.h"
#include "single.h"

int
stfs(void *frS, void *ea)
{
      FP_DECL_D(A);
      FP_DECL_S(R);
      float f;
      int err;

#ifdef DEBUG
      printk("%s: S %p, ea %p\n", __FUNCTION__, frS, ea);
#endif

      __FP_UNPACK_D(A, frS);

#ifdef DEBUG
      printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c);
#endif

      FP_CONV(S, D, 1, 2, R, A);

#ifdef DEBUG
      printk("R: %ld %lu %ld (%ld)\n", R_s, R_f, R_e, R_c);
#endif

      err = _FP_PACK_CANONICAL(S, 1, R);
      if (!err || !__FPU_TRAP_P(err)) {
            __FP_PACK_RAW_1(S, &f, R);
            if (copy_to_user(ea, &f, sizeof(float)))
                  return -EFAULT;
      }

      return err;
}

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