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Cleanup.

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Бранимир Караџић
2024-11-23 20:45:08 -08:00
parent d588a8fb0e
commit 7014882dcd
3 changed files with 63 additions and 4 deletions
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16
include/bx/inline/math.inl
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@@ -110,9 +110,9 @@ namespace bx
return -floor(-_a);
}
inline BX_CONSTEXPR_FUNC float round(float _f)
inline BX_CONSTEXPR_FUNC float round(float _a)
{
return floor(_f + 0.5f);
return floor(_a + 0.5f);
}
inline BX_CONSTEXPR_FUNC float lerp(float _a, float _b, float _t)
@@ -214,7 +214,17 @@ namespace bx
inline BX_CONST_FUNC float pow(float _a, float _b)
{
return exp(_b * log(_a) );
if (abs(_b) < kFloatSmallest)
{
return 1.0f;
}
if (abs(_a) < kFloatSmallest)
{
return 0.0f;
}
return copySign(exp(_b * log(abs(_a) ) ), _a);
}
inline BX_CONST_FUNC float exp2(float _a)

1
src/math.cpp
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@@ -194,6 +194,7 @@ namespace bx
{
int32_t exp;
float ff = frexp(_a, &exp);
if (ff < kSqrt2*0.5f)
{
ff *= 2.0f;

50
tests/math_test.cpp
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@@ -431,22 +431,48 @@ TEST_CASE("mod", "[math][libm]")
STATIC_REQUIRE( 1.0f == bx::mod(1389.0f, 2.0f) );
}
typedef float (*MathFloatFn)(float);
template<MathFloatFn BxT, MathFloatFn CrtT>
void testMathFunc1Float(float _value)
{
REQUIRE(CrtT(_value) == BxT(_value) );
}
TEST_CASE("floor", "[math][libm]")
{
STATIC_REQUIRE( 13.0f == bx::floor( 13.89f) );
STATIC_REQUIRE(-14.0f == bx::floor(-13.89f) );
testMathFunc1Float<bx::floor, ::floorf>( 13.89f);
testMathFunc1Float<bx::floor, ::floorf>(-13.89f);
}
TEST_CASE("ceil", "[math][libm]")
{
STATIC_REQUIRE( 14.0f == bx::ceil( 13.89f) );
STATIC_REQUIRE(-13.0f == bx::ceil( -13.89f) );
testMathFunc1Float<bx::ceil, ::ceilf>( 13.89f);
testMathFunc1Float<bx::ceil, ::ceilf>(-13.89f);
}
TEST_CASE("round", "[math][libm]")
{
STATIC_REQUIRE( 14.0f == bx::round( 13.89f) );
STATIC_REQUIRE(-14.0f == bx::round( -13.89f) );
testMathFunc1Float<bx::round, ::roundf>( 13.89f);
testMathFunc1Float<bx::round, ::roundf>(-13.89f);
}
TEST_CASE("trunc", "[math][libm]")
{
STATIC_REQUIRE( 13.0f == bx::trunc( 13.89f) );
STATIC_REQUIRE(-13.0f == bx::trunc(-13.89f) );
testMathFunc1Float<bx::trunc, ::truncf>( 13.89f);
testMathFunc1Float<bx::trunc, ::truncf>(-13.89f);
}
TEST_CASE("fract", "[math][libm]")
@@ -457,7 +483,13 @@ TEST_CASE("fract", "[math][libm]")
TEST_CASE("ldexp", "[math][libm]")
{
STATIC_REQUIRE(1389.0f == bx::ldexp(86.8125, 4) );
STATIC_REQUIRE( 1389.0f == bx::ldexp(86.8125, 4) );
STATIC_REQUIRE(0.437500f == bx::ldexp(7.0f, -4.0f) );
STATIC_REQUIRE(bx::isEqual(-0.0f, bx::ldexp(-0.0f, 10.0f), 0.000000001f) );
STATIC_REQUIRE(0x1p127f == bx::ldexp(1.0f, 127.0f) );
STATIC_REQUIRE(0x1p-126f == bx::ldexp(1.0f, -126.0f) );
STATIC_REQUIRE(0x1p24f == bx::ldexp(1.0f, 24.0f) );
bx::WriterI* writer = bx::getNullOut();
bx::Error err;
@@ -487,6 +519,22 @@ 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) );
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) );
bx::WriterI* writer = bx::getNullOut();
bx::Error err;