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annotate dep/fmt/test/compile-fp-test.cc @ 343:1faa72660932

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*: transfer back to cmake from autotools autotools just made lots of things more complicated than they should have and many things broke (i.e. translations)
author Paper <paper@paper.us.eu.org>
date Thu, 20 Jun 2024 05:56:06 -0400
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Paper <paper@paper.us.eu.org>
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1 // Formatting library for C++ - formatting library tests
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2 //
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3 // Copyright (c) 2012 - present, Victor Zverovich
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4 // All rights reserved.
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5 //
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6 // For the license information refer to format.h.
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7
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8 #include "fmt/compile.h"
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9 #include "gmock/gmock.h"
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10
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11 #if defined(__cpp_lib_bit_cast) && __cpp_lib_bit_cast >= 201806 && \
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12 defined(__cpp_constexpr) && __cpp_constexpr >= 201907 && \
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13 defined(__cpp_constexpr_dynamic_alloc) && \
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14 __cpp_constexpr_dynamic_alloc >= 201907 && FMT_CPLUSPLUS >= 202002L
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15
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16 template <size_t max_string_length, typename Char = char> struct test_string {
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17 template <typename T> constexpr bool operator==(const T& rhs) const noexcept {
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18 return fmt::basic_string_view<Char>(rhs).compare(buffer) == 0;
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19 }
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20 Char buffer[max_string_length]{};
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21 };
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22
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23 template <size_t max_string_length, typename Char = char, typename... Args>
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24 consteval auto test_format(auto format, const Args&... args) {
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25 test_string<max_string_length, Char> string{};
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26 fmt::format_to(string.buffer, format, args...);
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27 return string;
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28 }
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29
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30 TEST(compile_time_formatting_test, floating_point) {
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31 EXPECT_EQ("0", test_format<2>(FMT_COMPILE("{}"), 0.0f));
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32 EXPECT_EQ("392.500000", test_format<11>(FMT_COMPILE("{0:f}"), 392.5f));
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33
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34 EXPECT_EQ("0", test_format<2>(FMT_COMPILE("{:}"), 0.0));
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35 EXPECT_EQ("0.000000", test_format<9>(FMT_COMPILE("{:f}"), 0.0));
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36 EXPECT_EQ("0", test_format<2>(FMT_COMPILE("{:g}"), 0.0));
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37 EXPECT_EQ("392.65", test_format<7>(FMT_COMPILE("{:}"), 392.65));
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38 EXPECT_EQ("392.65", test_format<7>(FMT_COMPILE("{:g}"), 392.65));
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39 EXPECT_EQ("392.65", test_format<7>(FMT_COMPILE("{:G}"), 392.65));
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40 EXPECT_EQ("4.9014e+06", test_format<11>(FMT_COMPILE("{:g}"), 4.9014e6));
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41 EXPECT_EQ("-392.650000", test_format<12>(FMT_COMPILE("{:f}"), -392.65));
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42 EXPECT_EQ("-392.650000", test_format<12>(FMT_COMPILE("{:F}"), -392.65));
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43
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44 EXPECT_EQ("3.926500e+02", test_format<13>(FMT_COMPILE("{0:e}"), 392.65));
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45 EXPECT_EQ("3.926500E+02", test_format<13>(FMT_COMPILE("{0:E}"), 392.65));
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46 EXPECT_EQ("+0000392.6", test_format<11>(FMT_COMPILE("{0:+010.4g}"), 392.65));
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47 EXPECT_EQ("9223372036854775808.000000",
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48 test_format<27>(FMT_COMPILE("{:f}"), 9223372036854775807.0));
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49
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50 constexpr double nan = std::numeric_limits<double>::quiet_NaN();
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51 EXPECT_EQ("nan", test_format<4>(FMT_COMPILE("{}"), nan));
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52 EXPECT_EQ("+nan", test_format<5>(FMT_COMPILE("{:+}"), nan));
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53 if (std::signbit(-nan))
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54 EXPECT_EQ("-nan", test_format<5>(FMT_COMPILE("{}"), -nan));
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55 else
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56 fmt::print("Warning: compiler doesn't handle negative NaN correctly");
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57
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58 constexpr double inf = std::numeric_limits<double>::infinity();
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59 EXPECT_EQ("inf", test_format<4>(FMT_COMPILE("{}"), inf));
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60 EXPECT_EQ("+inf", test_format<5>(FMT_COMPILE("{:+}"), inf));
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61 EXPECT_EQ("-inf", test_format<5>(FMT_COMPILE("{}"), -inf));
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62 }
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63 #endif