mirror of
https://github.com/bkaradzic/bx.git
synced 2026-02-17 20:52:37 +01:00
165 lines
3.8 KiB
C++
165 lines
3.8 KiB
C++
/*
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* Copyright 2010-2025 Branimir Karadzic. All rights reserved.
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* License: https://github.com/bkaradzic/bx/blob/master/LICENSE
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*/
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#include <bx/math.h>
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#include <bx/timer.h>
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#include <bx/file.h>
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#include <math.h>
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typedef float (*MathFn)(float);
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template<MathFn mfn>
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float mathTest(const char* _name)
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{
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bx::WriterI* writer = bx::getStdOut();
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int64_t elapsed = -bx::getHPCounter();
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float result = 0.0f;
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const float max = 1389.0f;
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for (float xx = 0.0f; xx < max; xx += 0.1f)
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{
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result += mfn(xx);
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}
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bx::Error err;
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elapsed += bx::getHPCounter();
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bx::write(writer, &err, "%-20s: %15f\n", _name, double(elapsed) );
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return result;
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}
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float rsqrt(float _a)
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{
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return 1.0f/::sqrtf(_a);
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}
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float sinCosNonApproxBench()
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{
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bx::WriterI* writer = bx::getStdOut();
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int64_t elapsed = -bx::getHPCounter();
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float result = 0.0f;
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const float max = 1389.0f;
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for (float xx = 0.0f; xx < max; xx += 0.1f)
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{
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float ss, cc;
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ss = bx::sin(xx);
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cc = bx::cos(xx);
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result += ss + cc;
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}
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bx::Error err;
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elapsed += bx::getHPCounter();
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bx::write(writer, &err, "%-20s: %15f\n", "sin + cos", double(elapsed) );
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return result;
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}
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float sinCosApproxBench()
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{
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bx::WriterI* writer = bx::getStdOut();
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int64_t elapsed = -bx::getHPCounter();
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float result = 0.0f;
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const float max = 1389.0f;
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for (float xx = 0.0f; xx < max; xx += 0.1f)
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{
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float ss, cc;
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bx::sinCosApprox(ss, cc, xx);
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result += ss + cc;
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}
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bx::Error err;
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elapsed += bx::getHPCounter();
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bx::write(writer, &err, "%-20s: %15f\n", "sinCosApprox", double(elapsed) );
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return result;
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}
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float g_result; // trick compiler to not discard results
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void math_bench()
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{
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bx::WriterI* writer = bx::getStdOut();
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bx::Error err;
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bx::write(writer, &err, "Math bench\n\n");
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g_result += mathTest< ::sqrtf >(" ::sqrtf");
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g_result += mathTest<bx::sqrtRef >("bx::sqrtRef");
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g_result += mathTest<bx::sqrtSimd >("bx::sqrtSimd");
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g_result += mathTest<bx::sqrt >("bx::sqrt");
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bx::write(writer, &err, "\n");
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g_result += mathTest< ::rsqrt >(" ::rsqrtf");
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g_result += mathTest<bx::rsqrtRef >("bx::rsqrtRef");
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g_result += mathTest<bx::rsqrtSimd>("bx::rsqrtSimd");
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g_result += mathTest<bx::rsqrt >("bx::rsqrt");
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bx::write(writer, &err, "\n");
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g_result += sinCosNonApproxBench();
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g_result += sinCosApproxBench();
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bx::write(writer, &err, "\n");
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g_result += mathTest< ::sinf >(" ::sinf");
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g_result += mathTest<bx::sin >("bx::sin");
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bx::write(writer, &err, "\n");
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g_result += mathTest< ::sinhf>(" ::sinhf");
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g_result += mathTest<bx::sinh >("bx::sinh");
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bx::write(writer, &err, "\n");
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g_result += mathTest< ::asinf>(" ::asinf");
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g_result += mathTest<bx::asin >("bx::asin");
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bx::write(writer, &err, "\n");
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g_result += mathTest< ::cosf >(" ::cosf");
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g_result += mathTest<bx::cos >("bx::cos");
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bx::write(writer, &err, "\n");
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g_result += mathTest< ::coshf>(" ::coshf");
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g_result += mathTest<bx::cosh >("bx::cosh");
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bx::write(writer, &err, "\n");
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g_result += mathTest< ::acosf>(" ::acosf");
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g_result += mathTest<bx::acos >("bx::acos");
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bx::write(writer, &err, "\n");
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g_result += mathTest< ::tanf >(" ::tanf");
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g_result += mathTest<bx::tan >("bx::tan");
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bx::write(writer, &err, "\n");
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g_result += mathTest< ::tanhf>(" ::tanhf");
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g_result += mathTest<bx::tanh >("bx::tanh");
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bx::write(writer, &err, "\n");
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g_result += mathTest< ::atanf>(" ::atanf");
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g_result += mathTest<bx::atan >("bx::atan");
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bx::write(writer, &err, "\n");
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g_result += mathTest< ::expf>(" ::expf");
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g_result += mathTest<bx::exp >("bx::exp");
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bx::write(writer, &err, "\n");
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g_result += mathTest< ::exp2f>(" ::exp2f");
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g_result += mathTest<bx::exp2 >("bx::exp2");
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bx::write(writer, &err, "\n");
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g_result += mathTest< ::logf >(" ::logf");
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g_result += mathTest<bx::log >("bx::log");
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bx::write(writer, &err, "\n");
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g_result += mathTest< ::log2f>(" ::log2f");
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g_result += mathTest<bx::log2 >("bx::log2");
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}
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