mirror of
https://github.com/bkaradzic/bx.git
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142 lines
3.5 KiB
C++
142 lines
3.5 KiB
C++
/*
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* Copyright 2010-2024 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", "[uint32_t]")
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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_part", "[uint32_t]")
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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("uint32_gcd", "[uint32_t]")
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{
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REQUIRE(1 == bx::uint32_gcd(13, 89) );
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REQUIRE(3 == bx::uint32_gcd( 3, 9) );
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REQUIRE(8 == bx::uint32_gcd( 8, 64) );
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REQUIRE(9 == bx::uint32_gcd(18, 81) );
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}
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TEST_CASE("uint32_lcm", "[uint32_t]")
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{
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REQUIRE(1157 == bx::uint32_lcm(13, 89) );
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REQUIRE( 9 == bx::uint32_lcm( 3, 9) );
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REQUIRE( 48 == bx::uint32_lcm( 6, 16) );
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REQUIRE( 80 == bx::uint32_lcm(16, 20) );
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}
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TEST_CASE("halfTo/FromFloat", "[uint32_t]")
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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", "[uint32_t]")
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{
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uint32_t shift = 0;
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uint32_t nextpow2 = bx::uint32_nextpow2(1);
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for (uint32_t ii = 1; ii < 1<<24; ++ii)
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{
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REQUIRE(nextpow2 == bx::uint32_nextpow2(ii) );
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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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REQUIRE(ii == nextpow2);
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nextpow2 = bx::uint32_nextpow2(ii+1);
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}
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}
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}
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TEST_CASE("uint32_roX", "[uint32_t]")
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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", "[uint32_t]")
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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", "[uint32_t]")
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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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for (int32_t ii = 0; ii < 1024; ++ii)
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{
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REQUIRE(bx::isAligned(ii, 0) );
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REQUIRE(ii == bx::alignUp(ii, 0) );
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REQUIRE(ii == bx::alignDown(ii, 0) );
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}
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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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