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Updated count bits, count leading/trailing zeros.

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Бранимир Караџић
2019-09-09 20:36:48 -07:00
parent da9248697e
commit 421eaf58a9
3 changed files with 111 additions and 21 deletions
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34
tests/uint32_test.cpp
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@@ -30,19 +30,39 @@ TEST_CASE("StrideAlign")
TEST_CASE("uint32_cnt")
{
REQUIRE( 0 == bx::uint32_cnttz(UINT32_C(1) ) );
REQUIRE( 0 == bx::uint32_cnttz<uint8_t >(1) );
REQUIRE( 7 == bx::uint32_cnttz<uint8_t >(1<<7) );
REQUIRE( 8 == bx::uint32_cnttz<uint8_t >(0) );
REQUIRE( 0 == bx::uint32_cnttz<uint16_t>(1) );
REQUIRE(15 == bx::uint32_cnttz<uint16_t>(1<<15) );
REQUIRE(16 == bx::uint32_cnttz<uint16_t>(0) );
REQUIRE( 0 == bx::uint32_cnttz<uint32_t>(1) );
REQUIRE(32 == bx::uint32_cnttz<uint32_t>(0) );
REQUIRE(31 == bx::uint32_cnttz<uint32_t>(1<<31) );
REQUIRE( 0 == bx::uint32_cnttz<uint64_t>(1) );
REQUIRE(64 == bx::uint32_cnttz<uint64_t>(0) );
REQUIRE(31 == bx::uint32_cntlz(UINT32_C(1) ) );
REQUIRE( 0 == bx::uint64_cnttz(UINT64_C(1) ) );
REQUIRE(63 == bx::uint64_cntlz(UINT64_C(1) ) );
REQUIRE( 7 == bx::uint32_cntlz<uint8_t >(1) );
REQUIRE( 8 == bx::uint32_cntlz<uint8_t >(0) );
REQUIRE(15 == bx::uint32_cntlz<uint16_t>(1) );
REQUIRE(16 == bx::uint32_cntlz<uint16_t>(0) );
REQUIRE(31 == bx::uint32_cntlz<uint32_t>(1) );
REQUIRE(32 == bx::uint32_cntlz<uint32_t>(0) );
REQUIRE(63 == bx::uint32_cntlz<uint64_t>(1) );
REQUIRE(64 == bx::uint32_cntlz<uint64_t>(0) );
REQUIRE( 0 == bx::uint32_cntbits(0) );
REQUIRE( 1 == bx::uint32_cntbits(1) );
REQUIRE(16 == bx::uint32_cntbits(UINT16_MAX) );
REQUIRE( 4 == bx::uint32_cntbits<uint8_t>(0x55) );
REQUIRE( 8 == bx::uint32_cntbits<uint16_t>(0x5555) );
REQUIRE(16 == bx::uint32_cntbits<uint32_t>(0x55555555) );
REQUIRE(32 == bx::uint32_cntbits<uint64_t>(0x5555555555555555) );
REQUIRE( 8 == bx::uint32_cntbits(UINT8_MAX) );
REQUIRE(16 == bx::uint32_cntbits(UINT16_MAX) );
REQUIRE(32 == bx::uint32_cntbits(UINT32_MAX) );
REQUIRE(64 == bx::uint32_cntbits(UINT64_MAX) );
}
TEST_CASE("uint32_part")