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AK: Fix incorrect formatter signing of numbers between -1.0 and 0.0

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Floating point numbers are casted to i64 and passed to the integer
formatting logic, and the floating point portion of the number is
handled separately. However, casting to i64 when the number is between
-1.0 and 0.0 produces 0, so the sign would be lost. This commit fixes
that by using put_u64 instead, which allows us to manually provide the
is_negative flag.
This commit is contained in:
Matthew Olsson 2021-04-15 13:28:02 -07:00 • committed by Linus Groh
parent bf8223926a
commit d719e745fb
2 changed files with 11 additions and 4 deletions
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6
AK/Tests/TestFormat.cpp
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@ -273,6 +273,12 @@ TEST_CASE(yay_this_implementation_sucks)
EXPECT_EQ(String::formatted("{:.0}", .99999999999), "0");
}
TEST_CASE(magnitude_less_than_zero)
{
EXPECT_EQ(String::formatted("{}", -0.654), "-0.654");
EXPECT_EQ(String::formatted("{}", 0.654), "0.654");
}
TEST_CASE(format_nullptr)
{
EXPECT_EQ(String::formatted("{}", nullptr), String::formatted("{:p}", static_cast<FlatPtr>(0)));