1 /* 2 * Copyright (c) 2020 Raspberry Pi (Trading) Ltd. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #ifndef _PICO_DOUBLE_H 8 #define _PICO_DOUBLE_H 9 10 #include <math.h> 11 #include "pico.h" 12 #include "pico/bootrom/sf_table.h" 13 14 #ifdef __cplusplus 15 extern "C" { 16 #endif 17 18 /** \file double.h 19 * \defgroup pico_double pico_double 20 * 21 * Optimized double-precision floating point functions 22 * 23 * (Replacement) optimized implementations are provided of the following compiler built-ins 24 * and math library functions: 25 * 26 * - __aeabi_dadd, __aeabi_ddiv, __aeabi_dmul, __aeabi_drsub, __aeabi_dsub, __aeabi_cdcmpeq, __aeabi_cdrcmple, __aeabi_cdcmple, __aeabi_dcmpeq, __aeabi_dcmplt, __aeabi_dcmple, __aeabi_dcmpge, __aeabi_dcmpgt, __aeabi_dcmpun, __aeabi_i2d, __aeabi_l2d, __aeabi_ui2d, __aeabi_ul2d, __aeabi_d2iz, __aeabi_d2lz, __aeabi_d2uiz, __aeabi_d2ulz, __aeabi_d2f 27 * - sqrt, cos, sin, tan, atan2, exp, log, ldexp, copysign, trunc, floor, ceil, round, asin, acos, atan, sinh, cosh, tanh, asinh, acosh, atanh, exp2, log2, exp10, log10, pow,, hypot, cbrt, fmod, drem, remainder, remquo, expm1, log1p, fma 28 * - powint, sincos (GNU extensions) 29 * 30 * The following additional optimized functions are also provided: 31 * 32 * - fix2double, ufix2double, fix642double, ufix642double, double2fix, double2ufix, double2fix64, double2ufix64, double2int, double2int64, double2int_z, double2int64_z 33 */ 34 35 double fix2double(int32_t m, int e); 36 double ufix2double(uint32_t m, int e); 37 double fix642double(int64_t m, int e); 38 double ufix642double(uint64_t m, int e); 39 40 // These methods round towards -Infinity. 41 int32_t double2fix(double f, int e); 42 uint32_t double2ufix(double f, int e); 43 int64_t double2fix64(double f, int e); 44 uint64_t double2ufix64(double f, int e); 45 int32_t double2int(double f); 46 int64_t double2int64(double f); 47 48 // These methods round towards 0. 49 int32_t double2int_z(double f); 50 int64_t double2int64_z(double f); 51 52 double exp10(double x); 53 void sincos(double x, double *sinx, double *cosx); 54 double powint(double x, int y); 55 56 #ifdef __cplusplus 57 } 58 #endif 59 60 #endif