mirror of
https://github.com/ZDoom/fluidsynth.git
synced 2024-11-14 16:40:43 +00:00
fa7354a336
This provides a less branchy and therefore more instruction-cache-friendly version of fluid_ct2hz(), which also significantly reduces the number of floating-point comparisons.
40 lines
1.3 KiB
C
40 lines
1.3 KiB
C
|
|
#include "test.h"
|
|
#include "utils/fluid_conv.h"
|
|
#include "utils/fluid_sys.h"
|
|
|
|
// this test makes sure FLUID_SNPRINTF uses a proper C99 compliant implementation
|
|
|
|
int float_eq(fluid_real_t x, fluid_real_t y)
|
|
{
|
|
static const float EPS = 1e-5;
|
|
FLUID_LOG(FLUID_INFO, "Comparing %.9f and %.9f", x, y);
|
|
return fabs(x-y) < EPS;
|
|
}
|
|
|
|
int main(void)
|
|
{
|
|
// 440 * 2^((x-6900)/1200) where x is the cent value given to ct2hz()
|
|
|
|
|
|
TEST_ASSERT(float_eq(fluid_ct2hz_real(38099), 2.9510849101059895e10));
|
|
|
|
TEST_ASSERT(float_eq(fluid_ct2hz_real(13500), 19912.12696));
|
|
|
|
TEST_ASSERT(float_eq(fluid_ct2hz_real(12900), 14080));
|
|
TEST_ASSERT(float_eq(fluid_ct2hz_real(12899), 14071.86942));
|
|
|
|
TEST_ASSERT(float_eq(fluid_ct2hz_real(12700), 12543.85395));
|
|
TEST_ASSERT(float_eq(fluid_ct2hz_real(6900), 440));
|
|
TEST_ASSERT(float_eq(fluid_ct2hz_real(5700), 220));
|
|
TEST_ASSERT(float_eq(fluid_ct2hz_real(4500), 110));
|
|
|
|
TEST_ASSERT(float_eq(fluid_ct2hz_real(901), 13.75794461));
|
|
TEST_ASSERT(float_eq(fluid_ct2hz_real(900), 13.75));
|
|
TEST_ASSERT(float_eq(fluid_ct2hz_real(899), 13.74205998));
|
|
|
|
TEST_ASSERT(float_eq(fluid_ct2hz_real(1), 8.180522806));
|
|
TEST_ASSERT(float_eq(fluid_ct2hz_real(0), 8.175798916)); // often referred to as Absolute zero in the SF2 spec
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|