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use math/float.zig everywhere

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viri
2022-04-06 20:49:05 -06:00
parent 5d6a5a1236
commit e46c612503
26 changed files with 177 additions and 173 deletions
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30
lib/std/math/ldexp.zig
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@@ -57,6 +57,8 @@ pub fn ldexp(x: anytype, n: i32) @TypeOf(x) {
}
test "math.ldexp" {
// TODO derive the various constants here with new maths API
// basic usage
try expect(ldexp(@as(f16, 1.5), 4) == 24.0);
try expect(ldexp(@as(f32, 1.5), 4) == 24.0);
@@ -73,20 +75,20 @@ test "math.ldexp" {
try expect(math.isNormal(ldexp(@as(f128, 1.0), -16382)));
try expect(!math.isNormal(ldexp(@as(f128, 1.0), -16383)));
// unreliable due to lack of native f16 support, see talk on PR #8733
// try expect(ldexp(@as(f16, 0x1.1FFp-1), -14 - 9) == math.f16_true_min);
try expect(ldexp(@as(f32, 0x1.3FFFFFp-1), -126 - 22) == math.f32_true_min);
try expect(ldexp(@as(f64, 0x1.7FFFFFFFFFFFFp-1), -1022 - 51) == math.f64_true_min);
try expect(ldexp(@as(f128, 0x1.7FFFFFFFFFFFFFFFFFFFFFFFFFFFp-1), -16382 - 111) == math.f128_true_min);
// try expect(ldexp(@as(f16, 0x1.1FFp-1), -14 - 9) == math.floatTrueMin(f16));
try expect(ldexp(@as(f32, 0x1.3FFFFFp-1), -126 - 22) == math.floatTrueMin(f32));
try expect(ldexp(@as(f64, 0x1.7FFFFFFFFFFFFp-1), -1022 - 51) == math.floatTrueMin(f64));
try expect(ldexp(@as(f128, 0x1.7FFFFFFFFFFFFFFFFFFFFFFFFFFFp-1), -16382 - 111) == math.floatTrueMin(f128));
// float limits
try expect(ldexp(@as(f32, math.f32_max), -128 - 149) > 0.0);
try expect(ldexp(@as(f32, math.f32_max), -128 - 149 - 1) == 0.0);
try expect(!math.isPositiveInf(ldexp(@as(f16, math.f16_true_min), 15 + 24)));
try expect(math.isPositiveInf(ldexp(@as(f16, math.f16_true_min), 15 + 24 + 1)));
try expect(!math.isPositiveInf(ldexp(@as(f32, math.f32_true_min), 127 + 149)));
try expect(math.isPositiveInf(ldexp(@as(f32, math.f32_true_min), 127 + 149 + 1)));
try expect(!math.isPositiveInf(ldexp(@as(f64, math.f64_true_min), 1023 + 1074)));
try expect(math.isPositiveInf(ldexp(@as(f64, math.f64_true_min), 1023 + 1074 + 1)));
try expect(!math.isPositiveInf(ldexp(@as(f128, math.f128_true_min), 16383 + 16494)));
try expect(math.isPositiveInf(ldexp(@as(f128, math.f128_true_min), 16383 + 16494 + 1)));
try expect(ldexp(math.floatMax(f32), -128 - 149) > 0.0);
try expect(ldexp(math.floatMax(f32), -128 - 149 - 1) == 0.0);
try expect(!math.isPositiveInf(ldexp(math.floatTrueMin(f16), 15 + 24)));
try expect(math.isPositiveInf(ldexp(math.floatTrueMin(f16), 15 + 24 + 1)));
try expect(!math.isPositiveInf(ldexp(math.floatTrueMin(f32), 127 + 149)));
try expect(math.isPositiveInf(ldexp(math.floatTrueMin(f32), 127 + 149 + 1)));
try expect(!math.isPositiveInf(ldexp(math.floatTrueMin(f64), 1023 + 1074)));
try expect(math.isPositiveInf(ldexp(math.floatTrueMin(f64), 1023 + 1074 + 1)));
try expect(!math.isPositiveInf(ldexp(math.floatTrueMin(f128), 16383 + 16494)));
try expect(math.isPositiveInf(ldexp(math.floatTrueMin(f128), 16383 + 16494 + 1)));
}