1 //===-- Utilities for testing stdbit --------------------------------------===// 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 /* 10 * Declare these BEFORE including stdbit-macros.h so that this test may still be 11 * run even if a given target doesn't yet have these individual entrypoints 12 * enabled. 13 */ 14 15 #include "include/__llvm-libc-common.h" 16 17 #include <stdbool.h> // bool in C 18 19 #define STDBIT_STUB_FUNCTION(FUNC_NAME, LEADING_VAL) \ 20 unsigned FUNC_NAME##_uc(unsigned char x) { return LEADING_VAL##AU; } \ 21 unsigned FUNC_NAME##_us(unsigned short x) { return LEADING_VAL##BU; } \ 22 unsigned FUNC_NAME##_ui(unsigned int x) { return LEADING_VAL##CU; } \ 23 unsigned FUNC_NAME##_ul(unsigned long x) { return LEADING_VAL##DU; } \ 24 unsigned FUNC_NAME##_ull(unsigned long long x) { return LEADING_VAL##EU; } 25 26 __BEGIN_C_DECLS 27 28 STDBIT_STUB_FUNCTION(stdc_leading_zeros, 0xA) 29 STDBIT_STUB_FUNCTION(stdc_leading_ones, 0xB) 30 STDBIT_STUB_FUNCTION(stdc_trailing_zeros, 0xC) 31 STDBIT_STUB_FUNCTION(stdc_trailing_ones, 0xD) 32 STDBIT_STUB_FUNCTION(stdc_first_leading_zero, 0xE) 33 STDBIT_STUB_FUNCTION(stdc_first_leading_one, 0xF) 34 STDBIT_STUB_FUNCTION(stdc_first_trailing_zero, 0x0) 35 STDBIT_STUB_FUNCTION(stdc_first_trailing_one, 0x1) 36 STDBIT_STUB_FUNCTION(stdc_count_zeros, 0x2) 37 STDBIT_STUB_FUNCTION(stdc_count_ones, 0x3) 38 39 bool stdc_has_single_bit_uc(unsigned char x) { return false; } 40 bool stdc_has_single_bit_us(unsigned short x) { return false; } 41 bool stdc_has_single_bit_ui(unsigned x) { return false; } 42 bool stdc_has_single_bit_ul(unsigned long x) { return false; } 43 bool stdc_has_single_bit_ull(unsigned long long x) { return false; } 44 45 STDBIT_STUB_FUNCTION(stdc_bit_width, 0x4) 46 47 unsigned char stdc_bit_floor_uc(unsigned char x) { return 0x5AU; } 48 unsigned short stdc_bit_floor_us(unsigned short x) { return 0x5BU; } 49 unsigned stdc_bit_floor_ui(unsigned x) { return 0x5CU; } 50 unsigned long stdc_bit_floor_ul(unsigned long x) { return 0x5DUL; } 51 unsigned long long stdc_bit_floor_ull(unsigned long long x) { return 0x5EULL; } 52 53 unsigned char stdc_bit_ceil_uc(unsigned char x) { return 0x6AU; } 54 unsigned short stdc_bit_ceil_us(unsigned short x) { return 0x6BU; } 55 unsigned stdc_bit_ceil_ui(unsigned x) { return 0x6CU; } 56 unsigned long stdc_bit_ceil_ul(unsigned long x) { return 0x6DUL; } 57 unsigned long long stdc_bit_ceil_ull(unsigned long long x) { return 0x6EULL; } 58 59 __END_C_DECLS 60