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151 lines
4.2 KiB
C++
151 lines
4.2 KiB
C++
/*
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* Copyright 2010-2022 Branimir Karadzic. All rights reserved.
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* License: https://github.com/bkaradzic/bx/blob/master/LICENSE
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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::strideAlign<16>(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::strideAlign<16>(ii+1, 12) );
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}
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uint32_t offset = 11;
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offset = bx::strideAlign(offset, 32);
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REQUIRE(offset == 32);
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offset = bx::strideAlign(offset, 24);
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REQUIRE(offset == 48);
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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<uint8_t >(1) );
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REQUIRE( 7 == bx::uint32_cnttz<uint8_t >(1<<7) );
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REQUIRE( 8 == bx::uint32_cnttz<uint8_t >(0) );
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REQUIRE( 1 == bx::uint32_cnttz<uint8_t >(0x3e) );
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REQUIRE( 0 == bx::uint32_cnttz<uint16_t>(1) );
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REQUIRE(15 == bx::uint32_cnttz<uint16_t>(1<<15) );
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REQUIRE(16 == bx::uint32_cnttz<uint16_t>(0) );
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REQUIRE( 0 == bx::uint32_cnttz<uint32_t>(1) );
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REQUIRE(32 == bx::uint32_cnttz<uint32_t>(0) );
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REQUIRE(31 == bx::uint32_cnttz<uint32_t>(1u<<31) );
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REQUIRE( 0 == bx::uint32_cnttz<uint64_t>(1) );
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REQUIRE(64 == bx::uint32_cnttz<uint64_t>(0) );
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REQUIRE( 7 == bx::uint32_cntlz<uint8_t >(1) );
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REQUIRE( 8 == bx::uint32_cntlz<uint8_t >(0) );
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REQUIRE( 2 == bx::uint32_cntlz<uint8_t >(0x3e) );
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REQUIRE(15 == bx::uint32_cntlz<uint16_t>(1) );
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REQUIRE(16 == bx::uint32_cntlz<uint16_t>(0) );
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REQUIRE(31 == bx::uint32_cntlz<uint32_t>(1) );
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REQUIRE(32 == bx::uint32_cntlz<uint32_t>(0) );
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REQUIRE(63 == bx::uint32_cntlz<uint64_t>(1) );
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REQUIRE(64 == bx::uint32_cntlz<uint64_t>(0) );
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REQUIRE( 0 == bx::uint32_cntbits(0) );
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REQUIRE( 1 == bx::uint32_cntbits(1) );
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REQUIRE( 4 == bx::uint32_cntbits<uint8_t>(0x55) );
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REQUIRE( 8 == bx::uint32_cntbits<uint16_t>(0x5555) );
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REQUIRE(16 == bx::uint32_cntbits<uint32_t>(0x55555555) );
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REQUIRE(32 == bx::uint32_cntbits<uint64_t>(0x5555555555555555) );
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REQUIRE( 8 == bx::uint32_cntbits(UINT8_MAX) );
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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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REQUIRE(64 == bx::uint32_cntbits(UINT64_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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TEST_CASE("align", "")
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{
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REQUIRE( bx::isAligned(0, 8) );
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REQUIRE(!bx::isAligned(7, 8) );
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REQUIRE( bx::isAligned(64, 8) );
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REQUIRE(!bx::isAligned(63, 8) );
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REQUIRE( 0 == bx::alignUp( 0, 16) );
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REQUIRE( 16 == bx::alignUp( 1, 16) );
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REQUIRE( 16 == bx::alignUp( 15, 16) );
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REQUIRE( 16 == bx::alignUp( 16, 16) );
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REQUIRE(256 == bx::alignUp(255, 16) );
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REQUIRE( 0 == bx::alignUp(-1, 16) );
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REQUIRE(-16 == bx::alignUp(-31, 16) );
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REQUIRE( 0 == bx::alignUp( 0, 256) );
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REQUIRE(256 == bx::alignUp( 1, 256) );
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REQUIRE(256 == bx::alignUp( 15, 256) );
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REQUIRE(256 == bx::alignUp(255, 256) );
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REQUIRE(256 == bx::alignUp(256, 256) );
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REQUIRE(256 == bx::alignUp(256, 256) );
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REQUIRE(512 == bx::alignUp(511, 256) );
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REQUIRE( 0 == bx::alignDown( 0, 16) );
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REQUIRE( 0 == bx::alignDown( 1, 16) );
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REQUIRE( 0 == bx::alignDown( 15, 16) );
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REQUIRE( 16 == bx::alignDown( 16, 16) );
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REQUIRE(240 == bx::alignDown(255, 16) );
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REQUIRE(-16 == bx::alignDown(-1, 16) );
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REQUIRE(-32 == bx::alignDown(-31, 16) );
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}
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