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tools: Added support for Inf and NaN to the IEEE 754 tester

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WerWolv
2022-08-04 13:24:53 +02:00
parent a1a3fcbe65
commit e2d75ad6bf
1 changed files with 47 additions and 7 deletions
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54
plugins/builtin/source/content/tools_entries.cpp
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@@ -16,6 +16,7 @@
#include <chrono>
#include <random>
#include <regex>
#include <limits>
#include <llvm/Demangle/Demangle.h>
#include "math_evaluator.hpp"
@@ -1222,9 +1223,9 @@ namespace hex::plugin::builtin {
{
const auto exponentBias = (u128(1) << (exponentBitCount - 1)) - 1;
const long double signValue = signBits == 0 ? 1 : -1;
const long double exponentValue = exponentBits == 0 ? 0 : std::pow<long double>(2, i64(i128(exponentBits) - i128(exponentBias)));
const long double mantissaValue = [mantissaBitPosition] {
long double signValue = signBits == 0 ? 1 : -1;
long double exponentValue = exponentBits == 0 ? 0 : std::pow<long double>(2, i64(i128(exponentBits) - i128(exponentBias)));
long double mantissaValue = [mantissaBitPosition] {
long double mantissa = 1.0;
for (i32 bit = 0; bit < mantissaBitCount; bit++) {
if (hex::extract(mantissaBitPosition - bit, mantissaBitPosition - bit, value) != 0)
@@ -1234,6 +1235,28 @@ namespace hex::plugin::builtin {
return mantissa;
}();
enum class NumberType {
Regular,
SignalingNaN,
QuietNaN,
NegativeInfinity,
PositiveInfinity
} numberType = NumberType::Regular;
if (std::popcount(exponentBits) == exponentBitCount) {
if (mantissaBits == 0) {
if (signBits == 0)
numberType = NumberType::PositiveInfinity;
else
numberType = NumberType::NegativeInfinity;
} else {
if (mantissaBits & (u128(1) << (mantissaBitCount - 1)))
numberType = NumberType::QuietNaN;
else
numberType = NumberType::SignalingNaN;
}
}
if (ImGui::BeginTable("##result", 5, ImGuiTableFlags_RowBg | ImGuiTableFlags_SizingFixedFit)) {
ImGui::TableSetupColumn("hex.builtin.tools.ieee756.type"_lang, ImGuiTableColumnFlags_IndentEnable);
@@ -1264,7 +1287,7 @@ namespace hex::plugin::builtin {
ImGui::TableNextColumn();
ImGui::TextUnformatted("=");
ImGui::TableNextColumn();
ImGui::TextFormatted("{0}", exponentValue);
ImGui::TextFormatted("{0:.8G}", exponentValue);
ImGui::TableNextColumn();
ImGui::TextUnformatted("hex.builtin.tools.ieee756.mantissa"_lang);
@@ -1274,7 +1297,7 @@ namespace hex::plugin::builtin {
ImGui::TableNextColumn();
ImGui::TextUnformatted("=");
ImGui::TableNextColumn();
ImGui::TextFormatted("{0:.2f}", mantissaValue);
ImGui::TextFormatted("{0:.8G}", mantissaValue);
ImGui::TableNextRow();
ImGui::TextUnformatted(" ");
@@ -1285,11 +1308,28 @@ namespace hex::plugin::builtin {
ImGui::TextUnformatted("hex.builtin.tools.ieee756.result.float"_lang);
ImGui::TableNextColumn();
ImGui::TableNextColumn();
ImGui::TextFormatted("{0} * {1} * {2}", signValue, exponentValue, mantissaValue);
ImGui::TextFormatted("{0} * {1:.8G} * {2:.8G}", signValue, exponentValue, mantissaValue);
ImGui::TableNextColumn();
ImGui::TextUnformatted("=");
ImGui::TableNextColumn();
ImGui::TextFormatted("{0:.2f}", signValue * exponentValue * mantissaValue);
switch (numberType) {
using enum NumberType;
case NumberType::Regular:
ImGui::TextFormatted("{0:.8G}", signValue * exponentValue * mantissaValue);
break;
case NumberType::SignalingNaN:
ImGui::TextUnformatted("Signaling NaN");
break;
case NumberType::QuietNaN:
ImGui::TextUnformatted("Quiet NaN");
break;
case NumberType::NegativeInfinity:
ImGui::TextUnformatted("-Inf");
break;
case NumberType::PositiveInfinity:
ImGui::TextUnformatted("Inf");
break;
}
ImGui::TableNextColumn();
ImGui::TextUnformatted("hex.builtin.tools.ieee756.result.hex"_lang);