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Implement fallback FP formatting with given precision (#1526)

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This commit is contained in:
Victor Zverovich
2020-09-07 09:34:05 -07:00
parent fb289cf56b
commit 9f312fe87e
2 changed files with 70 additions and 28 deletions
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6
test/format-test.cc
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@@ -762,8 +762,7 @@ TEST(FormatterTest, HashFlag) {
EXPECT_EQ("4.e+01", format("{:#.0e}", 42.0));
EXPECT_EQ("0.", format("{:#.0f}", 0.01));
EXPECT_EQ("0.50", format("{:#.2g}", 0.5));
auto s = format("{:#.0f}", 0.5); // MSVC's printf uses wrong rounding mode.
EXPECT_TRUE(s == "0." || s == "1.");
EXPECT_EQ("0.", format("{:#.0f}", 0.5));
EXPECT_THROW_MSG(format("{0:#", 'c'), format_error,
"missing '}' in format string");
EXPECT_THROW_MSG(format("{0:#}", 'c'), format_error,
@@ -1279,6 +1278,9 @@ TEST(FormatterTest, PrecisionRounding) {
char buffer[64];
safe_sprintf(buffer, "%f", n);
EXPECT_EQ(buffer, format("{:f}", n));
EXPECT_EQ("225.51575035152063720",
fmt::format("{:.17f}", 225.51575035152064));
EXPECT_EQ("-761519619559038.2", fmt::format("{:.1f}", -761519619559038.2));
}
TEST(FormatterTest, FormatNaN) {