1 //===-- Collection of utils for exp and friends -----------------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #ifndef LLVM_LIBC_SRC_MATH_EXP_UTILS_H 10 #define LLVM_LIBC_SRC_MATH_EXP_UTILS_H 11 12 #include <stdint.h> 13 14 #define EXP2F_TABLE_BITS 5 15 #define EXP2F_POLY_ORDER 3 16 #define N (1 << EXP2F_TABLE_BITS) 17 18 namespace __llvm_libc { 19 20 struct Exp2fDataTable { 21 uint64_t tab[1 << EXP2F_TABLE_BITS]; 22 double shift_scaled; 23 double poly[EXP2F_POLY_ORDER]; 24 double shift; 25 double invln2_scaled; 26 double poly_scaled[EXP2F_POLY_ORDER]; 27 }; 28 29 extern const Exp2fDataTable exp2f_data; 30 31 } // namespace __llvm_libc 32 33 #endif // LLVM_LIBC_SRC_MATH_EXP_UTILS_H 34