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