ayo
7c5d3c9157
Add native K/M/RR inference engines, HIP kernels, replay and validation harnesses, and Windows DLSS setup and runtime support. Include GPU profiling tools, build and packaging scripts, platform integration patches, and implementation documentation.
46 lines
2.0 KiB
C++
46 lines
2.0 KiB
C++
#include "binary16.h"
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#include <cstdio>
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#include <initializer_list>
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#include <stdexcept>
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static void check(double value, uint16_t expected) {
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const auto actual = d4r::diag::binary16::half_bits(value);
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if (actual != expected) throw std::runtime_error("binary16 rounding mismatch");
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}
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int main() {
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using namespace d4r::diag::binary16;
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try {
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unsigned encodings = 0, boundaries = 0;
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for (unsigned bits = 0; bits < 65536; ++bits) {
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if ((bits & 0x7c00) == 0x7c00 && (bits & 0x3ff)) continue;
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check(half_value(uint16_t(bits)), uint16_t(bits));
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++encodings;
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}
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for (unsigned bits = 0; bits < 0x7bff; ++bits) {
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const double low = half_value(uint16_t(bits)), high = half_value(uint16_t(bits + 1));
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const double midpoint = (low + high) * 0.5;
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const uint16_t tie = uint16_t(bits + (bits & 1));
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check(midpoint, tie); check(-midpoint, uint16_t(tie | 0x8000));
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check(std::nextafter(midpoint, low), uint16_t(bits));
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check(std::nextafter(midpoint, high), uint16_t(bits + 1));
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#if !defined(_MSC_VER)
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for (double value : {midpoint, -midpoint, std::nextafter(midpoint, low), std::nextafter(midpoint, high)}) {
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const _Float16 native = static_cast<_Float16>(value);
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uint16_t expected; std::memcpy(&expected, &native, sizeof(expected));
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check(value, expected);
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}
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#endif
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++boundaries;
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}
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check(65519.0, 0x7bff); check(65520.0, 0x7c00);
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check(-65520.0, 0xfc00);
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check(std::numeric_limits<double>::denorm_min(), 0);
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check(-std::numeric_limits<double>::denorm_min(), 0x8000);
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check(std::numeric_limits<double>::quiet_NaN(), 0x7e00);
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std::printf("PASS BINARY16 encodings=%u rounding_boundaries=%u\n", encodings, boundaries);
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return 0;
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} catch (const std::exception& e) {
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std::fprintf(stderr, "FAIL BINARY16 %s\n", e.what()); return 5;
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}
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}
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