LXR linux/arch/sh/include/asm/sfp-machine.h

   1/* SPDX-License-Identifier: GPL-2.0+
   2 *
   3 * Machine-dependent software floating-point definitions.
   4   SuperH kernel version.
   5   Copyright (C) 1997,1998,1999 Free Software Foundation, Inc.
   6   This file is part of the GNU C Library.
   7   Contributed by Richard Henderson (rth@cygnus.com),
   8                  Jakub Jelinek (jj@ultra.linux.cz),
   9                  David S. Miller (davem@redhat.com) and
  10                  Peter Maydell (pmaydell@chiark.greenend.org.uk).
  11*/
  12
  13#ifndef _SFP_MACHINE_H
  14#define _SFP_MACHINE_H
  15
  16#define _FP_W_TYPE_SIZE         32
  17#define _FP_W_TYPE              unsigned long
  18#define _FP_WS_TYPE             signed long
  19#define _FP_I_TYPE              long
  20
  21#define _FP_MUL_MEAT_S(R,X,Y)                                   \
  22  _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm)
  23#define _FP_MUL_MEAT_D(R,X,Y)                                   \
  24  _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm)
  25#define _FP_MUL_MEAT_Q(R,X,Y)                                   \
  26  _FP_MUL_MEAT_4_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm)
  27
  28#define _FP_DIV_MEAT_S(R,X,Y)   _FP_DIV_MEAT_1_udiv(S,R,X,Y)
  29#define _FP_DIV_MEAT_D(R,X,Y)   _FP_DIV_MEAT_2_udiv(D,R,X,Y)
  30#define _FP_DIV_MEAT_Q(R,X,Y)   _FP_DIV_MEAT_4_udiv(Q,R,X,Y)
  31
  32#define _FP_NANFRAC_S           ((_FP_QNANBIT_S << 1) - 1)
  33#define _FP_NANFRAC_D           ((_FP_QNANBIT_D << 1) - 1), -1
  34#define _FP_NANFRAC_Q           ((_FP_QNANBIT_Q << 1) - 1), -1, -1, -1
  35#define _FP_NANSIGN_S           0
  36#define _FP_NANSIGN_D           0
  37#define _FP_NANSIGN_Q           0
  38
  39#define _FP_KEEPNANFRACP 1
  40
  41/*
  42 * If one NaN is signaling and the other is not,
  43 * we choose that one, otherwise we choose X.
  44 */
  45#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP)                      \
  46  do {                                                          \
  47    if ((_FP_FRAC_HIGH_RAW_##fs(X) & _FP_QNANBIT_##fs)          \
  48        && !(_FP_FRAC_HIGH_RAW_##fs(Y) & _FP_QNANBIT_##fs))     \
  49      {                                                         \
  50        R##_s = Y##_s;                                          \
  51        _FP_FRAC_COPY_##wc(R,Y);                                \
  52      }                                                         \
  53    else                                                        \
  54      {                                                         \
  55        R##_s = X##_s;                                          \
  56        _FP_FRAC_COPY_##wc(R,X);                                \
  57      }                                                         \
  58    R##_c = FP_CLS_NAN;                                         \
  59  } while (0)
  60
  61//#define FP_ROUNDMODE          FPSCR_RM
  62#define FP_DENORM_ZERO          1/*FPSCR_DN*/
  63
  64/* Exception flags. */
  65#define FP_EX_INVALID           (1<<4)
  66#define FP_EX_DIVZERO           (1<<3)
  67#define FP_EX_OVERFLOW          (1<<2)
  68#define FP_EX_UNDERFLOW         (1<<1)
  69#define FP_EX_INEXACT           (1<<0)
  70
  71#endif
  72
  73