authorgravatar for thatlemon@gmail.comLemonBoy <thatlemon@gmail.com> 2021-04-29 09:05:33+02:00
committergravatar for thatlemon@gmail.comLemonBoy <thatlemon@gmail.com> 2021-05-01 16:28:13+02:00
log06b2fee05eeb4280fd4363a8a8da73f59f977b73
treebca8d848d261794772d530b1387a0c2fe5abcd1d
parent236dba8ba926c3214e759df23d20f2f5880b6235

std: Implement isFinite for f128

1 files changed, 18 insertions(+), 0 deletions(-)

lib/std/math/isfinite.zig+18
......@@ -24,6 +24,10 @@ pub fn isFinite(x: anytype) bool {
2424 const bits = @bitCast(u64, x);
2525 return bits & (maxInt(u64) >> 1) < (0x7FF << 52);
2626 },
27 f128 => {
28 const bits = @bitCast(u128, x);
29 return bits & (maxInt(u128) >> 1) < (0x7FFF << 112);
30 },
2731 else => {
2832 @compileError("isFinite not implemented for " ++ @typeName(T));
2933 },
......@@ -37,10 +41,24 @@ test "math.isFinite" {
3741 expect(isFinite(@as(f32, -0.0)));
3842 expect(isFinite(@as(f64, 0.0)));
3943 expect(isFinite(@as(f64, -0.0)));
44 expect(isFinite(@as(f128, 0.0)));
45 expect(isFinite(@as(f128, -0.0)));
46
4047 expect(!isFinite(math.inf(f16)));
4148 expect(!isFinite(-math.inf(f16)));
4249 expect(!isFinite(math.inf(f32)));
4350 expect(!isFinite(-math.inf(f32)));
4451 expect(!isFinite(math.inf(f64)));
4552 expect(!isFinite(-math.inf(f64)));
53 expect(!isFinite(math.inf(f128)));
54 expect(!isFinite(-math.inf(f128)));
55
56 expect(!isFinite(math.nan(f16)));
57 expect(!isFinite(-math.nan(f16)));
58 expect(!isFinite(math.nan(f32)));
59 expect(!isFinite(-math.nan(f32)));
60 expect(!isFinite(math.nan(f64)));
61 expect(!isFinite(-math.nan(f64)));
62 expect(!isFinite(math.nan(f128)));
63 expect(!isFinite(-math.nan(f128)));
4664}