1/* 2 * Common Float Helpers 3 * 4 * Copyright (c) 2019 Linaro 5 * 6 * SPDX-License-Identifier: GPL-3.0-or-later 7 */ 8 9#include <inttypes.h> 10 11/* Some hosts do not have support for all of these; not required by ISO C. */ 12#ifndef FE_OVERFLOW 13#define FE_OVERFLOW 0 14#endif 15#ifndef FE_UNDERFLOW 16#define FE_UNDERFLOW 0 17#endif 18#ifndef FE_DIVBYZERO 19#define FE_DIVBYZERO 0 20#endif 21#ifndef FE_INEXACT 22#define FE_INEXACT 0 23#endif 24#ifndef FE_INVALID 25#define FE_INVALID 0 26#endif 27 28/* Number of constants in each table */ 29int get_num_f16(void); 30int get_num_f32(void); 31int get_num_f64(void); 32 33/* Accessor helpers, overflows will automatically wrap */ 34uint16_t get_f16(int i); /* use _Float16 when we can */ 35float get_f32(int i); 36double get_f64(int i); 37 38/* Return format strings, free after use */ 39char * fmt_f16(uint16_t); 40char * fmt_f32(float); 41char * fmt_f64(double); 42/* exception flags */ 43char * fmt_flags(void); 44