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build: std::powf not available in gcc

This commit is contained in:
Eric Wasylishen 2024-05-20 12:20:44 -06:00
parent 8e12b9b49a
commit d0c2fdb235
1 changed files with 3 additions and 3 deletions
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6
common/litfile.cc
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@ -79,11 +79,11 @@ uint32_t HDR_PackE5BRG9(qvec3f rgb)
const int prelim_exponent = std::max(-B - 1, (int)std::floor(std::log2(max_comp))) + 1 + B;
// refined shared exponent
const int max_s = (int)std::floor((max_comp / std::powf(2, prelim_exponent - B - N)) + 0.5f);
const int max_s = (int)std::floor((max_comp / std::pow(2.0f, prelim_exponent - B - N)) + 0.5f);
int refined_exponent = std::clamp((max_s < (1 << N)) ? prelim_exponent : prelim_exponent + 1, 0, 0x1f);
const float scale = std::powf(2, refined_exponent - B - N);
const float scale = std::pow(2.0f, refined_exponent - B - N);
int r_integer = std::clamp((int)std::floor((r / scale) + 0.5), 0, 0x1ff);
int g_integer = std::clamp((int)std::floor((g / scale) + 0.5), 0, 0x1ff);
@ -120,7 +120,7 @@ qvec3f HDR_UnpackE5BRG9(uint32_t packed)
const uint32_t green_int = (packed >> 9) & 0x1ff;
const uint32_t red_int = packed & 0x1ff;
const float multiplier = pow(2.0f, static_cast<float>(exponent));
const float multiplier = std::pow(2.0f, static_cast<float>(exponent));
return qvec3f(red_int, green_int, blue_int) * multiplier;
}