LXR linux/arch/powerpc/math-emu/fsqrts.c

   1// SPDX-License-Identifier: GPL-2.0
   2#include <linux/types.h>
   3#include <linux/errno.h>
   4#include <linux/uaccess.h>
   5
   6#include <asm/sfp-machine.h>
   7#include <math-emu/soft-fp.h>
   8#include <math-emu/double.h>
   9#include <math-emu/single.h>
  10
  11int
  12fsqrts(void *frD, void *frB)
  13{
  14        FP_DECL_D(B);
  15        FP_DECL_D(R);
  16        FP_DECL_EX;
  17
  18#ifdef DEBUG
  19        printk("%s: %p %p %p %p\n", __func__, frD, frB);
  20#endif
  21
  22        FP_UNPACK_DP(B, frB);
  23
  24#ifdef DEBUG
  25        printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c);
  26#endif
  27
  28        if (B_s && B_c != FP_CLS_ZERO)
  29                FP_SET_EXCEPTION(EFLAG_VXSQRT);
  30        if (B_c == FP_CLS_NAN)
  31                FP_SET_EXCEPTION(EFLAG_VXSNAN);
  32
  33        FP_SQRT_D(R, B);
  34
  35#ifdef DEBUG
  36        printk("R: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c);
  37#endif
  38
  39        __FP_PACK_DS(frD, R);
  40
  41        return FP_CUR_EXCEPTIONS;
  42}
  43