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Fix small number rounding with fixed precision in grisu

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This commit is contained in:
Victor Zverovich 2019-07-04 06:59:11 -07:00
parent 6a031347e5
commit edd13fcc1c
2 changed files with 2 additions and 0 deletions
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1
include/fmt/format-inl.h
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@ -604,6 +604,7 @@ struct fixed_handler {
// Check if precision is satisfied just by leading zeros, e.g.
// format("{:.2f}", 0.001) gives "0.00" without generating any digits.
if (precision > 0) return digits::more;
if (precision < 0) return digits::done;
auto dir = get_round_direction(divisor, remainder, error);
if (dir == unknown) return digits::error;
buf[size++] = dir == up ? '1' : '0';

1
test/grisu-test.cc
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@ -40,6 +40,7 @@ TEST(GrisuTest, Zero) { EXPECT_EQ("0.0", fmt::format("{}", 0.0)); }
TEST(GrisuTest, Round) {
EXPECT_EQ("1.9156918820264798e-56",
fmt::format("{}", 1.9156918820264798e-56));
EXPECT_EQ("0.0000", fmt::format("{:.4f}", 7.2809479766055470e-15));
}
TEST(GrisuTest, Prettify) {