diff options
Diffstat (limited to 'lib/std/fmt.zig')
| -rw-r--r-- | lib/std/fmt.zig | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/lib/std/fmt.zig b/lib/std/fmt.zig index ce7b7d8c4d..9ab655852c 100644 --- a/lib/std/fmt.zig +++ b/lib/std/fmt.zig @@ -1121,9 +1121,12 @@ pub fn formatFloatHexadecimal( try writer.writeAll("0x"); try writer.writeByte(buf[0]); - if (options.precision != @as(usize, 0)) - try writer.writeAll("."); const trimmed = mem.trimRight(u8, buf[1..], "0"); + if (options.precision) |precision| { + if (precision > 0) try writer.writeAll("."); + } else if (trimmed.len > 0) { + try writer.writeAll("."); + } try writer.writeAll(trimmed); // Add trailing zeros if explicitly requested. if (options.precision) |precision| if (precision > 0) { @@ -2048,10 +2051,10 @@ test "float.hexadecimal" { try expectFmt("f64: 0x1.5555555555555p-2", "f64: {x}", .{@as(f64, 1.0 / 3.0)}); try expectFmt("f128: 0x1.5555555555555555555555555555p-2", "f128: {x}", .{@as(f128, 1.0 / 3.0)}); - try expectFmt("f16: 0x1.p-14", "f16: {x}", .{@as(f16, math.f16_min)}); - try expectFmt("f32: 0x1.p-126", "f32: {x}", .{@as(f32, math.f32_min)}); - try expectFmt("f64: 0x1.p-1022", "f64: {x}", .{@as(f64, math.f64_min)}); - try expectFmt("f128: 0x1.p-16382", "f128: {x}", .{@as(f128, math.f128_min)}); + try expectFmt("f16: 0x1p-14", "f16: {x}", .{@as(f16, math.f16_min)}); + try expectFmt("f32: 0x1p-126", "f32: {x}", .{@as(f32, math.f32_min)}); + try expectFmt("f64: 0x1p-1022", "f64: {x}", .{@as(f64, math.f64_min)}); + try expectFmt("f128: 0x1p-16382", "f128: {x}", .{@as(f128, math.f128_min)}); try expectFmt("f16: 0x0.004p-14", "f16: {x}", .{@as(f16, math.f16_true_min)}); try expectFmt("f32: 0x0.000002p-126", "f32: {x}", .{@as(f32, math.f32_true_min)}); |