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//=== lib/builtins/riscv/fp_mode.c - Floaing-point mode utilities -*- C -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "../fp_mode.h"
#define RISCV_TONEAREST 0x0
#define RISCV_TOWARDZERO 0x1
#define RISCV_DOWNWARD 0x2
#define RISCV_UPWARD 0x3
#define RISCV_INEXACT 0x1
CRT_FE_ROUND_MODE __fe_getround(void) {
#if defined(__riscv_f) || defined(__riscv_zfinx)
int frm;
__asm__ __volatile__("frrm %0" : "=r" (frm));
switch (frm) {
case RISCV_TOWARDZERO:
return CRT_FE_TOWARDZERO;
case RISCV_DOWNWARD:
return CRT_FE_DOWNWARD;
case RISCV_UPWARD:
return CRT_FE_UPWARD;
case RISCV_TONEAREST:
default:
return CRT_FE_TONEAREST;
}
#else
return CRT_FE_TONEAREST;
#endif
}
int __fe_raise_inexact(void) {
#if defined(__riscv_f) || defined(__riscv_zfinx)
__asm__ __volatile__("csrsi fflags, %0" :: "i" (RISCV_INEXACT));
#endif
return 0;
}
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