diff options
Diffstat (limited to 'lib/std')
| -rw-r--r-- | lib/std/fmt.zig | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/lib/std/fmt.zig b/lib/std/fmt.zig index 0c9ecbc08c..0fcb2ae5b1 100644 --- a/lib/std/fmt.zig +++ b/lib/std/fmt.zig @@ -1207,10 +1207,9 @@ pub fn formatFloatHexadecimal( mantissa |= 1 << fractional_bits; // Add the implicit integer bit. } - // Fill in zeroes to round the mantissa width to a multiple of 4. - if (T == f16) mantissa <<= 2 else if (T == f32) mantissa <<= 1; - const mantissa_digits = (fractional_bits + 3) / 4; + // Fill in zeroes to round the fraction width to a multiple of 4. + mantissa <<= mantissa_digits * 4 - fractional_bits; if (options.precision) |precision| { // Round if needed. @@ -2317,21 +2316,25 @@ test "float.hexadecimal" { try expectFmt("f16: 0x1.554p-2", "f16: {x}", .{@as(f16, 1.0 / 3.0)}); try expectFmt("f32: 0x1.555556p-2", "f32: {x}", .{@as(f32, 1.0 / 3.0)}); try expectFmt("f64: 0x1.5555555555555p-2", "f64: {x}", .{@as(f64, 1.0 / 3.0)}); + try expectFmt("f80: 0x1.5555555555555556p-2", "f80: {x}", .{@as(f80, 1.0 / 3.0)}); try expectFmt("f128: 0x1.5555555555555555555555555555p-2", "f128: {x}", .{@as(f128, 1.0 / 3.0)}); try expectFmt("f16: 0x1p-14", "f16: {x}", .{math.floatMin(f16)}); try expectFmt("f32: 0x1p-126", "f32: {x}", .{math.floatMin(f32)}); try expectFmt("f64: 0x1p-1022", "f64: {x}", .{math.floatMin(f64)}); + try expectFmt("f80: 0x1p-16382", "f80: {x}", .{math.floatMin(f80)}); try expectFmt("f128: 0x1p-16382", "f128: {x}", .{math.floatMin(f128)}); try expectFmt("f16: 0x0.004p-14", "f16: {x}", .{math.floatTrueMin(f16)}); try expectFmt("f32: 0x0.000002p-126", "f32: {x}", .{math.floatTrueMin(f32)}); try expectFmt("f64: 0x0.0000000000001p-1022", "f64: {x}", .{math.floatTrueMin(f64)}); + try expectFmt("f80: 0x0.0000000000000002p-16382", "f80: {x}", .{math.floatTrueMin(f80)}); try expectFmt("f128: 0x0.0000000000000000000000000001p-16382", "f128: {x}", .{math.floatTrueMin(f128)}); try expectFmt("f16: 0x1.ffcp15", "f16: {x}", .{math.floatMax(f16)}); try expectFmt("f32: 0x1.fffffep127", "f32: {x}", .{math.floatMax(f32)}); try expectFmt("f64: 0x1.fffffffffffffp1023", "f64: {x}", .{math.floatMax(f64)}); + try expectFmt("f80: 0x1.fffffffffffffffep16383", "f80: {x}", .{math.floatMax(f80)}); try expectFmt("f128: 0x1.ffffffffffffffffffffffffffffp16383", "f128: {x}", .{math.floatMax(f128)}); } @@ -2339,11 +2342,13 @@ test "float.hexadecimal.precision" { try expectFmt("f16: 0x1.5p-2", "f16: {x:.1}", .{@as(f16, 1.0 / 3.0)}); try expectFmt("f32: 0x1.555p-2", "f32: {x:.3}", .{@as(f32, 1.0 / 3.0)}); try expectFmt("f64: 0x1.55555p-2", "f64: {x:.5}", .{@as(f64, 1.0 / 3.0)}); - try expectFmt("f128: 0x1.5555555p-2", "f128: {x:.7}", .{@as(f128, 1.0 / 3.0)}); + try expectFmt("f80: 0x1.5555555p-2", "f80: {x:.7}", .{@as(f80, 1.0 / 3.0)}); + try expectFmt("f128: 0x1.555555555p-2", "f128: {x:.9}", .{@as(f128, 1.0 / 3.0)}); try expectFmt("f16: 0x1.00000p0", "f16: {x:.5}", .{@as(f16, 1.0)}); try expectFmt("f32: 0x1.00000p0", "f32: {x:.5}", .{@as(f32, 1.0)}); try expectFmt("f64: 0x1.00000p0", "f64: {x:.5}", .{@as(f64, 1.0)}); + try expectFmt("f80: 0x1.00000p0", "f80: {x:.5}", .{@as(f80, 1.0)}); try expectFmt("f128: 0x1.00000p0", "f128: {x:.5}", .{@as(f128, 1.0)}); } |