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#include "test.h"
#include "scale.c"
#include "util.c"
#include "fixpt.c"
static void test_scale(void)
{
fixpt_t ret;
ret = scale(5, -10, 10,
float_to_fixpt(-10.0f), float_to_fixpt(10.0f));
CHECK(ret == float_to_fixpt(5.0f));
ret = scale(5, 10, -10,
float_to_fixpt(10.0f), float_to_fixpt(-10.0f));
CHECK(ret == float_to_fixpt(5.0f));
ret = scale(5, -10, 10,
float_to_fixpt(-1.0f), float_to_fixpt(1.0f));
CHECK(ret == float_to_fixpt(0.5f));
ret = scale(5, 10, -10,
float_to_fixpt(1.0f), float_to_fixpt(-1.0f));
CHECK(ret == float_to_fixpt(0.5f));
ret = scale(-1, 10, -10,
float_to_fixpt(1.0f), float_to_fixpt(-1.0f));
CHECK(ret == float_to_fixpt(-0.1f));
ret = scale(1, 10, -10,
float_to_fixpt(1.0f), float_to_fixpt(-1.0f));
CHECK(ret == float_to_fixpt(0.1f));
ret = scale(1000, 0, 2000,
float_to_fixpt(0.0f), float_to_fixpt(10.0f));
CHECK(ret == float_to_fixpt(5.0f));
ret = scale(1000, 0, 2000,
float_to_fixpt(0.0f), float_to_fixpt(500.0f));
CHECK(ret == float_to_fixpt(250.0f));
ret = scale(500, 0, 2000,
float_to_fixpt(0.0f), float_to_fixpt(500.0f));
CHECK(ret == float_to_fixpt(125.0f));
ret = scale(1000, 0, 2000,
float_to_fixpt(500.0f), float_to_fixpt(0.0f));
CHECK(ret == float_to_fixpt(250.0f));
ret = scale(500, 0, 2000,
float_to_fixpt(500.0f), float_to_fixpt(0.0f));
CHECK(ret == float_to_fixpt(375.0f));
ret = scale(128, -10000, 10000,
float_to_fixpt(-10.0f), float_to_fixpt(10.0f));
CHECK(ret == float_to_fixpt(0.128f));
ret = scale(-128, -10000, 10000,
float_to_fixpt(-10.0f), float_to_fixpt(10.0f));
CHECK(ret == float_to_fixpt(-0.128f));
ret = scale(0, 0, 0x3FF,
float_to_fixpt(0.0f), float_to_fixpt(480.0f));
CHECK(ret == float_to_fixpt(0.0f));
ret = scale(0x3FF, 0, 0x3FF,
float_to_fixpt(0.0f), float_to_fixpt(480.0f));
CHECK(ret == float_to_fixpt(480.0f));
ret = scale(0x100, 0, 0x3FF,
float_to_fixpt(0.0f), float_to_fixpt(480.0f));
CHECK(ret >= float_to_fixpt(120.1f) &&
ret <= float_to_fixpt(120.2f));
ret = scale(0x200, 0, 0x3FF,
float_to_fixpt(0.0f), float_to_fixpt(480.0f));
CHECK(ret >= float_to_fixpt(240.2f) &&
ret <= float_to_fixpt(240.3f));
ret = scale(0x300, 0, 0x3FF,
float_to_fixpt(0.0f), float_to_fixpt(480.0f));
CHECK(ret >= float_to_fixpt(360.3f) &&
ret <= float_to_fixpt(360.4f));
ret = scale(0, 0, 0x3FF,
float_to_fixpt(0.0f), float_to_fixpt(5.0f));
CHECK(ret == float_to_fixpt(0.0f));
ret = scale(0x3FF, 0, 0x3FF,
float_to_fixpt(0.0f), float_to_fixpt(5.0f));
CHECK(ret == float_to_fixpt(5.0f));
ret = scale(0x100, 0, 0x3FF,
float_to_fixpt(0.0f), float_to_fixpt(5.0f));
CHECK(ret >= float_to_fixpt(1.245f) &&
ret <= float_to_fixpt(1.255f));
ret = scale(0x200, 0, 0x3FF,
float_to_fixpt(0.0f), float_to_fixpt(5.0f));
CHECK(ret >= float_to_fixpt(2.495f) &&
ret <= float_to_fixpt(2.505f));
ret = scale(0x300, 0, 0x3FF,
float_to_fixpt(0.0f), float_to_fixpt(5.0f));
CHECK(ret >= float_to_fixpt(3.745f) &&
ret <= float_to_fixpt(3.755f));
}
static void test_unscale(void)
{
int16_t ret;
ret = unscale(float_to_fixpt(5.0f), float_to_fixpt(-10.0f), float_to_fixpt(10.0f),
-10, 10);
CHECK(ret == 5);
ret = unscale(float_to_fixpt(5.0f), float_to_fixpt(10.0f), float_to_fixpt(-10.0f),
10, -10);
CHECK(ret == 5);
ret = unscale(float_to_fixpt(250.0f), float_to_fixpt(0.0f), float_to_fixpt(500.0f),
0, 10);
CHECK(ret == 5);
ret = unscale(float_to_fixpt(100.0f), float_to_fixpt(0.0f), float_to_fixpt(200.0f),
0, 500);
CHECK(ret == 250);
ret = unscale(float_to_fixpt(50.0f), float_to_fixpt(0.0f), float_to_fixpt(200.0f),
0, 500);
CHECK(ret == 125);
ret = unscale(float_to_fixpt(100.0f), float_to_fixpt(0.0f), float_to_fixpt(200.0f),
500, 0);
CHECK(ret == 250);
ret = unscale(float_to_fixpt(50.0f), float_to_fixpt(0.0f), float_to_fixpt(200.0f),
500, 0);
CHECK(ret == 375);
ret = unscale(float_to_fixpt(12.8f), float_to_fixpt(-100.0f), float_to_fixpt(100.0f),
-2000, 2000);
CHECK(ret == 256);
ret = unscale(float_to_fixpt(-12.8f), float_to_fixpt(-100.0f), float_to_fixpt(100.0f),
-2000, 2000);
CHECK(ret == -256);
ret = unscale(float_to_fixpt(0.0f), float_to_fixpt(0.0f), float_to_fixpt(480.0f),
0, 0x3FF);
CHECK(ret == 0);
ret = unscale(float_to_fixpt(480.0f), float_to_fixpt(0.0f), float_to_fixpt(480.0f),
0, 0x3FF);
CHECK(ret == 0x3FF);
ret = unscale(float_to_fixpt(120.15f), float_to_fixpt(0.0f), float_to_fixpt(480.0f),
0, 0x3FF);
CHECK(ret == 0x100);
ret = unscale(float_to_fixpt(240.25f), float_to_fixpt(0.0f), float_to_fixpt(480.0f),
0, 0x3FF);
CHECK(ret == 0x200);
ret = unscale(float_to_fixpt(360.35f), float_to_fixpt(0.0f), float_to_fixpt(480.0f),
0, 0x3FF);
CHECK(ret == 0x300);
ret = unscale(float_to_fixpt(0.0f), float_to_fixpt(0.0f), float_to_fixpt(5.0f),
0, 0x3FF);
CHECK(ret == 0);
ret = unscale(float_to_fixpt(5.0f), float_to_fixpt(0.0f), float_to_fixpt(5.0f),
0, 0x3FF);
CHECK(ret == 0x3FF);
ret = unscale(float_to_fixpt(1.25f), float_to_fixpt(0.0f), float_to_fixpt(5.0f),
0, 0x3FF);
CHECK(ret == 0x100);
ret = unscale(float_to_fixpt(2.5f), float_to_fixpt(0.0f), float_to_fixpt(5.0f),
0, 0x3FF);
CHECK(ret == 0x200);
/* FIXME
ret = unscale(float_to_fixpt(3.75f), float_to_fixpt(0.0f), float_to_fixpt(5.0f),
0, 0x3FF);
CHECK(ret == 0x300);
*/
ret = unscale(float_to_fixpt(5.0f), float_to_fixpt(0.0f), float_to_fixpt(5.0f),
0, 0x1FFF);
CHECK(ret == 0x1FFF);
ret = unscale(float_to_fixpt(2.5f), float_to_fixpt(0.0f), float_to_fixpt(5.0f),
0, 0x1FFF);
CHECK(ret == 0x1000);
ret = unscale(float_to_fixpt(0.0f), float_to_fixpt(0.0f), float_to_fixpt(5.0f),
0, 0x1FFF);
CHECK(ret == 0x0);
ret = unscale(float_to_fixpt(5.0f), float_to_fixpt(0.0f), float_to_fixpt(5.0f),
0x1FFF, 0);
CHECK(ret == 0x0);
ret = unscale(float_to_fixpt(2.5f), float_to_fixpt(0.0f), float_to_fixpt(5.0f),
0x1FFF, 0);
CHECK(ret == 0x1000);
ret = unscale(float_to_fixpt(0.0f), float_to_fixpt(0.0f), float_to_fixpt(5.0f),
0x1FFF, 0);
CHECK(ret == 0x1FFF);
}
static void test_scale_unscale(void)
{
fixpt_t fix;
int16_t raw;
fix = scale(100, -1000, 1000,
float_to_fixpt(-10.0f), float_to_fixpt(10.0f));
raw = unscale(fix, float_to_fixpt(-10.0f), float_to_fixpt(10.0f),
-1000, 1000);
CHECK(raw == 100);
fix = scale(-100, -1000, 1000,
float_to_fixpt(-10.0f), float_to_fixpt(10.0f));
raw = unscale(fix, float_to_fixpt(-10.0f), float_to_fixpt(10.0f),
-1000, 1000);
CHECK(raw == -100);
raw = unscale(float_to_fixpt(0.1f), float_to_fixpt(-10.0f), float_to_fixpt(10.0f),
-1000, 1000);
fix = scale(raw, -1000, 1000,
float_to_fixpt(-10.0f), float_to_fixpt(10.0f));
CHECK(fix == float_to_fixpt(0.1f));
raw = unscale(float_to_fixpt(-0.1f), float_to_fixpt(-10.0f), float_to_fixpt(10.0f),
-1000, 1000);
fix = scale(raw, -1000, 1000,
float_to_fixpt(-10.0f), float_to_fixpt(10.0f));
CHECK(fix == float_to_fixpt(-0.1f));
}
static void test_rescale(void)
{
fixpt_t ret;
ret = rescale(float_to_fixpt(5.0f), float_to_fixpt(-10.0f), float_to_fixpt(10.0f),
float_to_fixpt(-10.0f), float_to_fixpt(10.0f));
CHECK(ret == float_to_fixpt(5.0f));
ret = rescale(float_to_fixpt(5.0f), float_to_fixpt(10.0f), float_to_fixpt(-10.0f),
float_to_fixpt(10.0f), float_to_fixpt(-10.0f));
CHECK(ret == float_to_fixpt(5.0f));
ret = rescale(float_to_fixpt(5.0f), float_to_fixpt(-10.0f), float_to_fixpt(10.0f),
float_to_fixpt(-1.0f), float_to_fixpt(1.0f));
CHECK(ret == float_to_fixpt(0.5f));
ret = rescale(float_to_fixpt(5.0f), float_to_fixpt(10.0f), float_to_fixpt(-10.0f),
float_to_fixpt(1.0f), float_to_fixpt(-1.0f));
CHECK(ret == float_to_fixpt(0.5f));
ret = rescale(float_to_fixpt(-1.0f), float_to_fixpt(10.0f), float_to_fixpt(-10.0f),
float_to_fixpt(1.0f), float_to_fixpt(-1.0f));
CHECK(ret == float_to_fixpt(-0.1f));
ret = rescale(float_to_fixpt(1.0f), float_to_fixpt(10.0f), float_to_fixpt(-10.0f),
float_to_fixpt(1.0f), float_to_fixpt(-1.0f));
CHECK(ret == float_to_fixpt(0.1f));
ret = rescale(float_to_fixpt(100.0f), float_to_fixpt(0.0f), float_to_fixpt(200.0f),
float_to_fixpt(0.0f), float_to_fixpt(10.0f));
CHECK(ret == float_to_fixpt(5.0f));
ret = rescale(float_to_fixpt(100.0f), float_to_fixpt(0.0f), float_to_fixpt(200.0f),
float_to_fixpt(0.0f), float_to_fixpt(500.0f));
CHECK(ret == float_to_fixpt(250.0f));
ret = rescale(float_to_fixpt(50.0f), float_to_fixpt(0.0f), float_to_fixpt(200.0f),
float_to_fixpt(0.0f), float_to_fixpt(500.0f));
CHECK(ret == float_to_fixpt(125.0f));
ret = rescale(float_to_fixpt(100.0f), float_to_fixpt(0.0f), float_to_fixpt(200.0f),
float_to_fixpt(500.0f), float_to_fixpt(0.0f));
CHECK(ret == float_to_fixpt(250.0f));
ret = rescale(float_to_fixpt(50.0f), float_to_fixpt(0.0f), float_to_fixpt(200.0f),
float_to_fixpt(500.0f), float_to_fixpt(0.0f));
CHECK(ret == float_to_fixpt(375.0f));
ret = rescale(float_to_fixpt(12.8f), float_to_fixpt(-100.0f), float_to_fixpt(100.0f),
float_to_fixpt(-10.0f), float_to_fixpt(10.0f));
CHECK(ret == float_to_fixpt(1.28f));
ret = rescale(float_to_fixpt(-12.8f), float_to_fixpt(-100.0f), float_to_fixpt(100.0f),
float_to_fixpt(-10.0f), float_to_fixpt(10.0f));
CHECK(ret == float_to_fixpt(-1.28f));
ret = rescale(int_to_fixpt(0), int_to_fixpt(0), int_to_fixpt(0x3FF),
float_to_fixpt(0.0f), float_to_fixpt(480.0f));
CHECK(ret == float_to_fixpt(0.0f));
ret = rescale(int_to_fixpt(0x3FF), int_to_fixpt(0), int_to_fixpt(0x3FF),
float_to_fixpt(0.0f), float_to_fixpt(480.0f));
CHECK(ret == float_to_fixpt(480.0f));
ret = rescale(int_to_fixpt(0x100), int_to_fixpt(0), int_to_fixpt(0x3FF),
float_to_fixpt(0.0f), float_to_fixpt(480.0f));
CHECK(ret >= float_to_fixpt(120.1f) &&
ret <= float_to_fixpt(120.2f));
ret = rescale(int_to_fixpt(0x200), int_to_fixpt(0), int_to_fixpt(0x3FF),
float_to_fixpt(0.0f), float_to_fixpt(480.0f));
CHECK(ret >= float_to_fixpt(240.2f) &&
ret <= float_to_fixpt(240.3f));
ret = rescale(int_to_fixpt(0x300), int_to_fixpt(0), int_to_fixpt(0x3FF),
float_to_fixpt(0.0f), float_to_fixpt(480.0f));
CHECK(ret >= float_to_fixpt(360.3f) &&
ret <= float_to_fixpt(360.4f));
ret = rescale(int_to_fixpt(0), int_to_fixpt(0), int_to_fixpt(0x3FF),
float_to_fixpt(0.0f), float_to_fixpt(5.0f));
CHECK(ret == float_to_fixpt(0.0f));
ret = rescale(int_to_fixpt(0x3FF), int_to_fixpt(0), int_to_fixpt(0x3FF),
float_to_fixpt(0.0f), float_to_fixpt(5.0f));
CHECK(ret == float_to_fixpt(5.0f));
ret = rescale(int_to_fixpt(0x100), int_to_fixpt(0), int_to_fixpt(0x3FF),
float_to_fixpt(0.0f), float_to_fixpt(5.0f));
CHECK(ret >= float_to_fixpt(1.245f) &&
ret <= float_to_fixpt(1.255f));
ret = rescale(int_to_fixpt(0x200), int_to_fixpt(0), int_to_fixpt(0x3FF),
float_to_fixpt(0.0f), float_to_fixpt(5.0f));
CHECK(ret >= float_to_fixpt(2.495f) &&
ret <= float_to_fixpt(2.505f));
ret = rescale(int_to_fixpt(0x300), int_to_fixpt(0), int_to_fixpt(0x3FF),
float_to_fixpt(0.0f), float_to_fixpt(5.0f));
CHECK(ret >= float_to_fixpt(3.745f) &&
ret <= float_to_fixpt(3.755f));
}
int main(void)
{
test_scale();
test_unscale();
test_scale_unscale();
test_rescale();
return 0;
}
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