mirror of
https://github.com/s1lentq/ReGameDLL_CS.git
synced 2024-12-27 07:05:38 +03:00
69 lines
1.4 KiB
C++
69 lines
1.4 KiB
C++
#include "precompiled.h"
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#include "cppunitlite/TestHarness.h"
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__declspec(naked) double _sin_x87(double angle) {
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__asm {
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fld qword ptr[esp+4]
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fsin
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ret
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}
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}
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__declspec(naked) double _cos_x87(double angle) {
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__asm {
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fld qword ptr[esp + 4]
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fcos
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ret
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}
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}
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TEST(SinCosPrecision, SseMathFun, 10000)
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{
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char localbuf[256];
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for (double i = 0.0; i < 2 * M_PI; i += (M_PI / 10000.0)) {
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double x87_sin = _sin_x87(i);
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double x87_cos = _cos_x87(i);
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__m128 s, c, d;
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d = _mm_set1_ps((float)i);
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sincos_ps(d, &s, &c);
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double sse_sin = _mm_cvtss_f32(s);
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double sse_cos = _mm_cvtss_f32(c);
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Q_snprintf(localbuf, sizeof(localbuf), "sin precision failure for angle=%f", i);
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DOUBLES_EQUAL(localbuf, x87_sin, sse_sin, 0.000001);
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Q_snprintf(localbuf, sizeof(localbuf), "cos precision failure for angle=%f", i);
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DOUBLES_EQUAL(localbuf, x87_cos, sse_cos, 0.000001);
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}
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}
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/*
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TEST(SinCosPerformance, SseMathFun, 400000)
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{
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DWORD x87_start = GetTickCount();
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for (int i = 0; i < 100000000; i++) {
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double res =_sin_x87(0.0);
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DOUBLES_EQUAL("check", res, 0.0, 0.000001);
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}
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DWORD sse_start = GetTickCount();
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__m128 s, c, d;
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for (int i = 0; i < 100000000; i++) {
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d = _mm_set1_ps(0.0f);
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sincos_ps(d, &s, &c);
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double res = _mm_cvtss_f32(s);
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DOUBLES_EQUAL("check", res, 0.0, 0.000001);
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}
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DWORD sse_end = GetTickCount();
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printf("Time consumed: x87: %u ; sse: %u", sse_start - x87_start, sse_end - sse_start);
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}
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*/
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