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33 lines
560 B
C++
33 lines
560 B
C++
#include <cmath>
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#include "fastmath.h"
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FastMath g_Math;
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// This should match EQ's sin/cos LUTs
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// Some values didn't match on linux, but they were the "same" float :P
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FastMath::FastMath()
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{
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int ci = 0;
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int si = 128;
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float res;
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do {
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res = std::cos(static_cast<float>(ci) * M_PI * 2 / 512);
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lut_cos[ci] = res;
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if (si == 512)
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si = 0;
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lut_sin[si] = res;
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++ci;
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++si;
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} while (ci < 512);
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lut_sin[0] = 0.0f;
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lut_sin[128] = 1.0f;
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lut_sin[256] = 0.0f;
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lut_sin[384] = -1.0f;
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lut_cos[0] = 1.0f;
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lut_cos[128] = 0.0f;
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lut_cos[384] = 0.0f;
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}
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