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Merged
Stephan T. Lavavej (StephanTLavavej) merged 2 commits into from
Feb 1, 2022
Merged

gcd/lcm test from internal repo with questionable bits extracted #2507

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182f42e
gcd/lcm test from internal repo with questionable bits extracted
CaseyCarter Jan 27, 2022
7aabcbb
A noble rename embiggens the smallest compile-only test.
StephanTLavavej Jan 28, 2022
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1 change: 1 addition & 0 deletions tests/std/test.lst
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Expand Up @@ -246,6 +246,7 @@ tests\P0220R1_sample
tests\P0220R1_searchers
tests\P0220R1_string_view
tests\P0288R9_move_only_function
tests\P0295R0_gcd_lcm
tests\P0325R4_to_array
tests\P0339R6_polymorphic_allocator
tests\P0355R7_calendars_and_time_zones_clocks
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4 changes: 4 additions & 0 deletions tests/std/tests/P0295R0_gcd_lcm/env.lst
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@@ -0,0 +1,4 @@
# Copyright (c) Microsoft Corporation.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

RUNALL_INCLUDE ..\usual_17_matrix.lst
52 changes: 52 additions & 0 deletions tests/std/tests/P0295R0_gcd_lcm/test.compile.pass.cpp
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// Copyright (c) Microsoft Corporation.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

#include <limits.h>
#include <numeric>

using std::gcd;
using std::lcm;

#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)

int main() {} // COMPILE-ONLY

STATIC_ASSERT(gcd(0, 0) == 0);
STATIC_ASSERT(gcd(0, 1) == 1);
STATIC_ASSERT(gcd(1, 0) == 1);
STATIC_ASSERT(gcd(0, 1) == 1);
STATIC_ASSERT(gcd(60, 24) == 12);
STATIC_ASSERT(gcd(196, 42) == 14);
STATIC_ASSERT(gcd(54, 24) == 6);

STATIC_ASSERT(gcd(0, -1) == 1);
STATIC_ASSERT(gcd(-1, 0) == 1);
STATIC_ASSERT(gcd(0, -1) == 1);
STATIC_ASSERT(gcd(-60, -24) == 12);
STATIC_ASSERT(gcd(-196, -42) == 14);
STATIC_ASSERT(gcd(-54, -24) == 6);

STATIC_ASSERT(gcd(0, 1) == 1);
STATIC_ASSERT(gcd(-1, 0) == 1);
STATIC_ASSERT(gcd(0, 1) == 1);
STATIC_ASSERT(gcd(-60, 24) == 12);
STATIC_ASSERT(gcd(-196, 42) == 14);
STATIC_ASSERT(gcd(-54, 24) == 6);

STATIC_ASSERT(gcd(1073741824, 536870912) == 536870912);
STATIC_ASSERT(gcd(1073741824, -536870912) == 536870912);
STATIC_ASSERT(gcd(-1073741824, 536870912) == 536870912);
STATIC_ASSERT(gcd(INT_MAX, INT_MAX) == INT_MAX);
STATIC_ASSERT(gcd(INT_MIN, INT_MAX) == 1);
// gcd(INT_MIN, INT_MIN) -> undefined behavior
STATIC_ASSERT(gcd(INT_MIN + 1, INT_MIN + 1) == INT_MAX);

STATIC_ASSERT(gcd(4294967296ULL, 65536L) == 65536ULL);
STATIC_ASSERT(gcd(4294967296ULL, 65536UL) == 65536ULL);

STATIC_ASSERT(lcm(0, 0) == 0);
STATIC_ASSERT(lcm(0, 1) == 0);
STATIC_ASSERT(lcm(1, 0) == 0);
STATIC_ASSERT(lcm(1073741824, 536870912) == 1073741824);
STATIC_ASSERT(lcm(1073741824, -536870912) == 1073741824);
STATIC_ASSERT(lcm(-1073741824, 536870912) == 1073741824);