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 #ifdef __BIG_ENDIAN__
  17 #define __BYTE_ORDER __BIG_ENDIAN
  18 #define __LITTLE_ENDIAN 0
  19 #else
  20 #define __BYTE_ORDER __LITTLE_ENDIAN
  21 #define __BIG_ENDIAN 0
  22 #endif
  23
  24 #define _FP_W_TYPE_SIZE         32
  25 #define _FP_W_TYPE              unsigned long
  26 #define _FP_WS_TYPE             signed long
  27 #define _FP_I_TYPE              long
  28
  29 #define _FP_MUL_MEAT_S(R,X,Y)                                   \
  30   _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm)
  31 #define _FP_MUL_MEAT_D(R,X,Y)                                   \
  32   _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm)
  33 #define _FP_MUL_MEAT_Q(R,X,Y)                                   \
  34   _FP_MUL_MEAT_4_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm)
  35
  36 #define _FP_DIV_MEAT_S(R,X,Y)   _FP_DIV_MEAT_1_udiv(S,R,X,Y)
  37 #define _FP_DIV_MEAT_D(R,X,Y)   _FP_DIV_MEAT_2_udiv(D,R,X,Y)
  38 #define _FP_DIV_MEAT_Q(R,X,Y)   _FP_DIV_MEAT_4_udiv(Q,R,X,Y)
  39
  40 #define _FP_NANFRAC_S           ((_FP_QNANBIT_S << 1) - 1)
  41 #define _FP_NANFRAC_D           ((_FP_QNANBIT_D << 1) - 1), -1
  42 #define _FP_NANFRAC_Q           ((_FP_QNANBIT_Q << 1) - 1), -1, -1, -1
  43 #define _FP_NANSIGN_S           0
  44 #define _FP_NANSIGN_D           0
  45 #define _FP_NANSIGN_Q           0
  46
  47 #define _FP_KEEPNANFRACP 1
  48
  49 /*
  50  * If one NaN is signaling and the other is not,
  51  * we choose that one, otherwise we choose X.
  52  */
  53 #define _FP_CHOOSENAN(fs, wc, R, X, Y, OP)                      \
  54   do {                                                          \
  55     if ((_FP_FRAC_HIGH_RAW_##fs(X) & _FP_QNANBIT_##fs)          \
  56         && !(_FP_FRAC_HIGH_RAW_##fs(Y) & _FP_QNANBIT_##fs))     \
  57       {                                                         \
  58         R##_s = Y##_s;                                          \
  59         _FP_FRAC_COPY_##wc(R,Y);                                \
  60       }                                                         \
  61     else                                                        \
  62       {                                                         \
  63         R##_s = X##_s;                                          \
  64         _FP_FRAC_COPY_##wc(R,X);                                \
  65       }                                                         \
  66     R##_c = FP_CLS_NAN;                                         \
  67   } while (0)
  68
  69 //#define FP_ROUNDMODE          FPSCR_RM
  70 #define FP_DENORM_ZERO          1/*FPSCR_DN*/
  71
  72 /* Exception flags. */
  73 #define FP_EX_INVALID           (1<<4)
  74 #define FP_EX_DIVZERO           (1<<3)
  75 #define FP_EX_OVERFLOW          (1<<2)
  76 #define FP_EX_UNDERFLOW         (1<<1)
  77 #define FP_EX_INEXACT           (1<<0)
  78
  79 #endif
  80