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Moved math functions to be constexpr.

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Бранимир Караџић
2024-11-27 19:55:42 -08:00
parent c8ff296934
commit 7eace058a2
8 changed files with 335 additions and 317 deletions
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80
tests/math_test.cpp
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@@ -33,9 +33,16 @@ TEST_CASE("isFinite, isInfinite, isNan", "[math]")
}
}
static bool testLog2(float _a)
TEST_CASE("log", "[math][libm]")
{
return bx::log2(_a) == bx::log(_a) * (1.0f / bx::log(2.0f) );
STATIC_REQUIRE(0.0f == bx::log(1.0f) );
STATIC_REQUIRE(1.0f == bx::log(bx::kE) );
STATIC_REQUIRE(bx::kLogNat2 == bx::log(2.0f) );
}
static void testLog2(float _a)
{
REQUIRE(bx::log2(_a) == bx::log(_a) * (1.0f / bx::log(2.0f) ) );
}
TEST_CASE("log2", "[math][libm]")
@@ -43,15 +50,15 @@ TEST_CASE("log2", "[math][libm]")
testLog2(0.0f);
testLog2(256.0f);
REQUIRE(0.0f == bx::log2(1.0f) );
REQUIRE(1.0f == bx::log2(2.0f) );
REQUIRE(2.0f == bx::log2(4.0f) );
REQUIRE(3.0f == bx::log2(8.0f) );
REQUIRE(4.0f == bx::log2(16.0f) );
REQUIRE(5.0f == bx::log2(32.0f) );
REQUIRE(6.0f == bx::log2(64.0f) );
REQUIRE(7.0f == bx::log2(128.0f) );
REQUIRE(8.0f == bx::log2(256.0f) );
STATIC_REQUIRE(0.0f == bx::log2(1.0f) );
STATIC_REQUIRE(1.0f == bx::log2(2.0f) );
STATIC_REQUIRE(2.0f == bx::log2(4.0f) );
STATIC_REQUIRE(3.0f == bx::log2(8.0f) );
STATIC_REQUIRE(4.0f == bx::log2(16.0f) );
STATIC_REQUIRE(5.0f == bx::log2(32.0f) );
STATIC_REQUIRE(6.0f == bx::log2(64.0f) );
STATIC_REQUIRE(7.0f == bx::log2(128.0f) );
STATIC_REQUIRE(8.0f == bx::log2(256.0f) );
}
TEST_CASE("ceilLog2", "[math]")
@@ -324,7 +331,7 @@ TEST_CASE("rsqrt", "[math][libm]")
bx::Error err;
// rsqrtRef
REQUIRE(bx::isInfinite(bx::rsqrtRef(0.0f) ) );
STATIC_REQUIRE(bx::isInfinite(bx::rsqrtRef(0.0f) ) );
for (float xx = bx::kNearZero; xx < 100.0f; xx += 0.1f)
{
@@ -361,7 +368,8 @@ TEST_CASE("sqrt", "[math][libm]")
bx::Error err;
// sqrtRef
REQUIRE(bx::isNan(bx::sqrtRef(-1.0f) ) );
STATIC_REQUIRE(bx::isNan(bx::sqrtRef(-1.0f) ) );
REQUIRE(bx::isEqual(bx::sqrtRef(0.0f), ::sqrtf(0.0f), 0.0f) );
REQUIRE(bx::isEqual(bx::sqrtRef(1.0f), ::sqrtf(1.0f), 0.0f) );
@@ -434,7 +442,7 @@ TEST_CASE("mod", "[math][libm]")
typedef float (*MathFloatFn)(float);
template<MathFloatFn BxT, MathFloatFn CrtT>
void testMathFunc1Float(float _value)
static void testMathFunc1Float(float _value)
{
REQUIRE(CrtT(_value) == BxT(_value) );
}
@@ -519,21 +527,21 @@ TEST_CASE("exp", "[math][libm]")
TEST_CASE("pow", "[math][libm]")
{
REQUIRE(1.0f == bx::pow(0.0f, 0.0f) );
REQUIRE(1.0f == bx::pow(1.0f, 0.0f) );
REQUIRE(1.0f == bx::pow(3.0f, 0.0f) );
REQUIRE(1.0f == bx::pow(8.0f, 0.0f) );
REQUIRE(1.0f == bx::pow(9.0f, 0.0f) );
REQUIRE(0.0f == bx::pow(0.0f, 2.0f) );
STATIC_REQUIRE(1.0f == bx::pow(0.0f, 0.0f) );
STATIC_REQUIRE(1.0f == bx::pow(1.0f, 0.0f) );
STATIC_REQUIRE(1.0f == bx::pow(3.0f, 0.0f) );
STATIC_REQUIRE(1.0f == bx::pow(8.0f, 0.0f) );
STATIC_REQUIRE(1.0f == bx::pow(9.0f, 0.0f) );
STATIC_REQUIRE(0.0f == bx::pow(0.0f, 2.0f) );
REQUIRE( 4.0f == bx::pow( 2.0f, 2.0f) );
REQUIRE( -4.0f == bx::pow(-2.0f, 2.0f) );
REQUIRE( 0.25f == bx::pow( 2.0f, -2.0f) );
REQUIRE( -0.25f == bx::pow(-2.0f, -2.0f) );
REQUIRE( 8.0f == bx::pow( 2.0f, 3.0f) );
REQUIRE( -8.0f == bx::pow(-2.0f, 3.0f) );
REQUIRE( 0.125f == bx::pow( 2.0f, -3.0f) );
REQUIRE(-0.125f == bx::pow(-2.0f, -3.0f) );
STATIC_REQUIRE( 4.0f == bx::pow( 2.0f, 2.0f) );
STATIC_REQUIRE( -4.0f == bx::pow(-2.0f, 2.0f) );
STATIC_REQUIRE( 0.25f == bx::pow( 2.0f, -2.0f) );
STATIC_REQUIRE( -0.25f == bx::pow(-2.0f, -2.0f) );
STATIC_REQUIRE( 8.0f == bx::pow( 2.0f, 3.0f) );
STATIC_REQUIRE( -8.0f == bx::pow(-2.0f, 3.0f) );
STATIC_REQUIRE( 0.125f == bx::pow( 2.0f, -3.0f) );
STATIC_REQUIRE(-0.125f == bx::pow(-2.0f, -3.0f) );
bx::WriterI* writer = bx::getNullOut();
bx::Error err;
@@ -548,6 +556,9 @@ TEST_CASE("pow", "[math][libm]")
TEST_CASE("asin", "[math][libm]")
{
STATIC_REQUIRE(bx::isEqual( 0.0f, bx::asin(0.0f), 0.0001f) );
STATIC_REQUIRE(bx::isEqual(bx::kPiHalf, bx::asin(1.0f), 0.0001f) );
bx::WriterI* writer = bx::getNullOut();
bx::Error err;
@@ -561,6 +572,11 @@ TEST_CASE("asin", "[math][libm]")
TEST_CASE("sin", "[math][libm]")
{
STATIC_REQUIRE(bx::isEqual( 0.0f, bx::sin(0.0f ), 0.0000001f) );
STATIC_REQUIRE(bx::isEqual( 1.0f, bx::sin(bx::kPiHalf ), 0.0000001f) );
STATIC_REQUIRE(bx::isEqual( 0.0f, bx::sin(bx::kPi ), 0.0000001f) );
STATIC_REQUIRE(bx::isEqual(-1.0f, bx::sin(bx::kPiHalf*3.0f), 0.0000001f) );
bx::WriterI* writer = bx::getNullOut();
bx::Error err;
@@ -624,6 +640,9 @@ TEST_CASE("sinh", "[math][libm]")
TEST_CASE("acos", "[math][libm]")
{
STATIC_REQUIRE(bx::isEqual(bx::kPiHalf, bx::acos(0.0f), 0.0001f) );
STATIC_REQUIRE(bx::isEqual( 0.0f, bx::acos(1.0f), 0.0001f) );
bx::WriterI* writer = bx::getNullOut();
bx::Error err;
@@ -637,6 +656,11 @@ TEST_CASE("acos", "[math][libm]")
TEST_CASE("cos", "[math][libm]")
{
STATIC_REQUIRE(bx::isEqual( 1.0f, bx::cos(0.0f ), 0.0000001f) );
STATIC_REQUIRE(bx::isEqual( 0.0f, bx::cos(bx::kPiHalf ), 0.0000001f) );
STATIC_REQUIRE(bx::isEqual(-1.0f, bx::cos(bx::kPi ), 0.0000001f) );
STATIC_REQUIRE(bx::isEqual( 0.0f, bx::cos(bx::kPiHalf*3.0f), 0.0000001f) );
bx::WriterI* writer = bx::getNullOut();
bx::Error err;