mirror of
https://github.com/holub/mame
synced 2025-05-07 23:02:33 +03:00
91 lines
1.9 KiB
C++
91 lines
1.9 KiB
C++
/*
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* Copyright 2010-2018 Branimir Karadzic. All rights reserved.
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* License: https://github.com/bkaradzic/bx#license-bsd-2-clause
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*/
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#include "test.h"
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#include <bx/uint32_t.h>
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TEST_CASE("StrideAlign")
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{
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REQUIRE(0 == bx::strideAlign(0, 12) );
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for (uint32_t ii = 0; ii < 12; ++ii)
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{
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REQUIRE(12 == bx::strideAlign(ii+1, 12) );
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}
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REQUIRE(0 == bx::strideAlign16(0, 12) );
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for (uint32_t ii = 0; ii < 12; ++ii)
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{
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REQUIRE(48 == bx::strideAlign16(ii+1, 12) );
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}
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}
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TEST_CASE("uint32_cnt")
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{
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REQUIRE( 0 == bx::uint32_cnttz(UINT32_C(1) ) );
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REQUIRE(31 == bx::uint32_cntlz(UINT32_C(1) ) );
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REQUIRE( 0 == bx::uint64_cnttz(UINT64_C(1) ) );
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REQUIRE(63 == bx::uint64_cntlz(UINT64_C(1) ) );
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REQUIRE( 1 == bx::uint32_cntbits(1) );
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REQUIRE(16 == bx::uint32_cntbits(UINT16_MAX) );
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REQUIRE(32 == bx::uint32_cntbits(UINT32_MAX) );
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}
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TEST_CASE("uint32_part")
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{
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REQUIRE(UINT32_C(0x55555555) == bx::uint32_part1by1(UINT16_MAX) );
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REQUIRE(UINT32_C(0x09249249) == bx::uint32_part1by2(0x3ff) );
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}
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TEST_CASE("halfTo/FromFloat", "")
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{
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for (uint32_t ii = 0; ii < 0x7c00; ++ii)
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{
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const uint16_t orig = uint16_t(ii);
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const float htf = bx::halfToFloat(orig);
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const uint16_t hff = bx::halfFromFloat(htf);
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REQUIRE(orig == hff);
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}
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for (uint32_t ii = 0x8000; ii < 0xfc00; ++ii)
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{
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const uint16_t orig = uint16_t(ii);
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const float htf = bx::halfToFloat(orig);
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const uint16_t hff = bx::halfFromFloat(htf);
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REQUIRE(orig == hff);
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}
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}
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TEST_CASE("uint32_testpow2", "")
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{
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uint32_t shift = 0;
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for (uint32_t ii = 0; ii < UINT32_MAX; ++ii)
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{
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if (bx::uint32_testpow2(ii) )
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{
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REQUIRE(ii == 1u << shift);
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++shift;
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}
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}
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}
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TEST_CASE("uint32_roX", "")
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{
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REQUIRE(bx::uint32_rol(0x80000000, 1) == 1);
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REQUIRE(bx::uint32_ror(1, 1) == 0x80000000);
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}
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TEST_CASE("uint64_roX", "")
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{
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REQUIRE(bx::uint64_rol(0x8000000000000000, 1) == 1);
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REQUIRE(bx::uint64_ror(1, 1) == 0x8000000000000000);
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}
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