a25fa92d87
Currently there is no tests for generic macros of generated `stdbit.h` header in C, and it is easy to make typo mistakes as in https://github.com/llvm/llvm-project/issues/84658. In this patch, we add a simple test for them in C.
74 lines
3.5 KiB
C
74 lines
3.5 KiB
C
//===-- Utilities for testing stdbit --------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDSList-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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/*
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* Declare these BEFORE including stdbit-macros.h so that this test may still be
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* run even if a given target doesn't yet have these individual entrypoints
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* enabled.
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*/
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#include "include/__llvm-libc-common.h"
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#include <stdbool.h> // bool in C
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#define STDBIT_STUB_FUNCTION(FUNC_NAME, LEADING_VAL) \
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unsigned FUNC_NAME##_uc(unsigned char x) __NOEXCEPT { \
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return LEADING_VAL##AU; \
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} \
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unsigned FUNC_NAME##_us(unsigned short x) __NOEXCEPT { \
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return LEADING_VAL##BU; \
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} \
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unsigned FUNC_NAME##_ui(unsigned int x) __NOEXCEPT { \
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return LEADING_VAL##CU; \
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} \
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unsigned FUNC_NAME##_ul(unsigned long x) __NOEXCEPT { \
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return LEADING_VAL##DU; \
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} \
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unsigned FUNC_NAME##_ull(unsigned long long x) __NOEXCEPT { \
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return LEADING_VAL##EU; \
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}
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__BEGIN_C_DECLS
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STDBIT_STUB_FUNCTION(stdc_leading_zeros, 0xA)
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STDBIT_STUB_FUNCTION(stdc_leading_ones, 0xB)
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STDBIT_STUB_FUNCTION(stdc_trailing_zeros, 0xC)
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STDBIT_STUB_FUNCTION(stdc_trailing_ones, 0xD)
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STDBIT_STUB_FUNCTION(stdc_first_leading_zero, 0xE)
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STDBIT_STUB_FUNCTION(stdc_first_leading_one, 0xF)
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STDBIT_STUB_FUNCTION(stdc_first_trailing_zero, 0x0)
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STDBIT_STUB_FUNCTION(stdc_first_trailing_one, 0x1)
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STDBIT_STUB_FUNCTION(stdc_count_zeros, 0x2)
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STDBIT_STUB_FUNCTION(stdc_count_ones, 0x3)
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bool stdc_has_single_bit_uc(unsigned char x) __NOEXCEPT { return false; }
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bool stdc_has_single_bit_us(unsigned short x) __NOEXCEPT { return false; }
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bool stdc_has_single_bit_ui(unsigned x) __NOEXCEPT { return false; }
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bool stdc_has_single_bit_ul(unsigned long x) __NOEXCEPT { return false; }
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bool stdc_has_single_bit_ull(unsigned long long x) __NOEXCEPT { return false; }
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STDBIT_STUB_FUNCTION(stdc_bit_width, 0x4)
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unsigned char stdc_bit_floor_uc(unsigned char x) __NOEXCEPT { return 0x5AU; }
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unsigned short stdc_bit_floor_us(unsigned short x) __NOEXCEPT { return 0x5BU; }
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unsigned stdc_bit_floor_ui(unsigned x) __NOEXCEPT { return 0x5CU; }
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unsigned long stdc_bit_floor_ul(unsigned long x) __NOEXCEPT { return 0x5DUL; }
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unsigned long long stdc_bit_floor_ull(unsigned long long x) __NOEXCEPT {
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return 0x5EULL;
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}
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unsigned char stdc_bit_ceil_uc(unsigned char x) __NOEXCEPT { return 0x6AU; }
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unsigned short stdc_bit_ceil_us(unsigned short x) __NOEXCEPT { return 0x6BU; }
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unsigned stdc_bit_ceil_ui(unsigned x) __NOEXCEPT { return 0x6CU; }
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unsigned long stdc_bit_ceil_ul(unsigned long x) __NOEXCEPT { return 0x6DUL; }
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unsigned long long stdc_bit_ceil_ull(unsigned long long x) __NOEXCEPT {
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return 0x6EULL;
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}
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__END_C_DECLS
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