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🧪 test: improve coverage for fixp_pow edge cases #17

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Merged
perim merged 1 commit into from
Jul 20, 2026
Merged

🧪 test: improve coverage for fixp_pow edge cases #17

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10 changes: 10 additions & 0 deletions tests/test_fixp.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@
#include <stdio.h>
#include <cstdint>
#include <cmath>
#include <limits.h>

static inline double dotf(ivec2 a, ivec2 b) { return a.x.todouble() * b.x.todouble() + a.y.todouble() * b.y.todouble(); }

Expand Down Expand Up @@ -73,6 +74,15 @@ int main()
assert(fixp_dot(a.min, a.max) == dotf(a.min, a.max)); //a.min.x * a.max.x + a.min.y * a.max.y);
assert(fixp_pow(f5, 1) == 2);
assert(fixp_pow(f5, 2) == 4);
assert(fixp_pow(0, 5) == 0);
assert(fixp_pow(f5, 0) == 1);
assert(fixp_pow(fn1, 2) == 4);
assert(fixp_pow(fn1, 3) == -8);
assert(fixp_pow(fn1, 0) == 1);
assert(fixp_pow(f5, -1) == 0); // Large exponent via negative unsigned wrap-around
assert(fixp_pow(f5, UINT32_MAX) == 0);
fixp f_half = 0.5;
assert(fixp_pow(f_half, -1) == 0);
assert(fixp_sqrt(f5).toint() == 1);
assert(fixp_sqrt(f5).tofloat() > 1.4f);
assert(fixp_sqrt(f5).tofloat() < 1.5f);
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