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/* RISC-V softfloat definitions
Copyright (C) 2017-2024 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<https://www.gnu.org/licenses/>. */
#include <fenv.h>
#include <fpu_control.h>
#if __riscv_xlen == 32
# define _FP_W_TYPE_SIZE 32
# define _FP_W_TYPE unsigned long
# define _FP_WS_TYPE signed long
# define _FP_I_TYPE long
# define _FP_MUL_MEAT_S(R, X, Y) \
_FP_MUL_MEAT_1_wide (_FP_WFRACBITS_S, R, X, Y, umul_ppmm)
# define _FP_MUL_MEAT_D(R, X, Y) \
_FP_MUL_MEAT_2_wide (_FP_WFRACBITS_D, R, X, Y, umul_ppmm)
# define _FP_MUL_MEAT_Q(R, X, Y) \
_FP_MUL_MEAT_4_wide (_FP_WFRACBITS_Q, R, X, Y, umul_ppmm)
# define _FP_MUL_MEAT_DW_S(R, X, Y) \
_FP_MUL_MEAT_DW_1_wide (_FP_WFRACBITS_S, R, X, Y, umul_ppmm)
# define _FP_MUL_MEAT_DW_D(R, X, Y) \
_FP_MUL_MEAT_DW_2_wide (_FP_WFRACBITS_D, R, X, Y, umul_ppmm)
# define _FP_MUL_MEAT_DW_Q(R, X, Y) \
_FP_MUL_MEAT_DW_4_wide (_FP_WFRACBITS_Q, R, X, Y, umul_ppmm)
# define _FP_DIV_MEAT_S(R, X, Y) _FP_DIV_MEAT_1_udiv_norm (S, R, X, Y)
# define _FP_DIV_MEAT_D(R, X, Y) _FP_DIV_MEAT_2_udiv (D, R, X, Y)
# define _FP_DIV_MEAT_Q(R, X, Y) _FP_DIV_MEAT_4_udiv (Q, R, X, Y)
# define _FP_NANFRAC_S _FP_QNANBIT_S
# define _FP_NANFRAC_D _FP_QNANBIT_D, 0
# define _FP_NANFRAC_Q _FP_QNANBIT_Q, 0, 0, 0
#else
# define _FP_W_TYPE_SIZE 64
# define _FP_W_TYPE unsigned long long
# define _FP_WS_TYPE signed long long
# define _FP_I_TYPE long long
# define _FP_MUL_MEAT_S(R, X, Y) \
_FP_MUL_MEAT_1_imm (_FP_WFRACBITS_S, R, X, Y)
# define _FP_MUL_MEAT_D(R, X, Y) \
_FP_MUL_MEAT_1_wide (_FP_WFRACBITS_D, R, X, Y, umul_ppmm)
# define _FP_MUL_MEAT_Q(R, X, Y) \
_FP_MUL_MEAT_2_wide_3mul (_FP_WFRACBITS_Q, R, X, Y, umul_ppmm)
# define _FP_MUL_MEAT_DW_S(R, X, Y) \
_FP_MUL_MEAT_DW_1_imm (_FP_WFRACBITS_S, R, X, Y)
# define _FP_MUL_MEAT_DW_D(R, X, Y) \
_FP_MUL_MEAT_DW_1_wide (_FP_WFRACBITS_D, R, X, Y, umul_ppmm)
# define _FP_MUL_MEAT_DW_Q(R, X, Y) \
_FP_MUL_MEAT_DW_2_wide_3mul (_FP_WFRACBITS_Q, R, X, Y, umul_ppmm)
# define _FP_DIV_MEAT_S(R, X, Y) _FP_DIV_MEAT_1_imm (S, R, X, Y, _FP_DIV_HELP_imm)
# define _FP_DIV_MEAT_D(R, X, Y) _FP_DIV_MEAT_1_udiv_norm (D, R, X, Y)
# define _FP_DIV_MEAT_Q(R, X, Y) _FP_DIV_MEAT_2_udiv (Q, R, X, Y)
# define _FP_NANFRAC_S _FP_QNANBIT_S
# define _FP_NANFRAC_D _FP_QNANBIT_D
# define _FP_NANFRAC_Q _FP_QNANBIT_Q, 0
#endif
#define _FP_NANSIGN_S 0
#define _FP_NANSIGN_D 0
#define _FP_NANSIGN_Q 0
#define _FP_KEEPNANFRACP 0
#define _FP_QNANNEGATEDP 0
#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \
do { \
R##_s = _FP_NANSIGN_##fs; \
_FP_FRAC_SET_##wc (R, _FP_NANFRAC_##fs); \
R##_c = FP_CLS_NAN; \
} while (0)
#define _FP_DECL_EX int _frm __attribute__ ((unused));
#define FP_ROUNDMODE _frm
#define FP_RND_NEAREST FE_TONEAREST
#define FP_RND_ZERO FE_TOWARDZERO
#define FP_RND_PINF FE_UPWARD
#define FP_RND_MINF FE_DOWNWARD
#define FP_EX_INVALID FE_INVALID
#define FP_EX_OVERFLOW FE_OVERFLOW
#define FP_EX_UNDERFLOW FE_UNDERFLOW
#define FP_EX_DIVZERO FE_DIVBYZERO
#define FP_EX_INEXACT FE_INEXACT
#define _FP_TININESS_AFTER_ROUNDING 1
#ifdef __riscv_flen
# define FP_INIT_ROUNDMODE \
do { \
__asm__ volatile ("frrm %0" : "=r" (_frm)); \
} while (0)
# define FP_HANDLE_EXCEPTIONS \
do { \
if (__builtin_expect (_fex, 0)) \
__asm__ volatile ("csrs fflags, %0" : : "rK" (_fex)); \
} while (0)
#else
# define FP_INIT_ROUNDMODE _frm = FP_RND_NEAREST
#endif
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