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Support Vectors in std.math.clamp

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koenditor 2024-06-01 08:21:48 +03:00 committed by Veikka Tuominen
parent e09963d854
commit 64ef45eb05
1 changed files with 12 additions and 1 deletions
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13
lib/std/math.zig
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@ -518,7 +518,15 @@ test wrap {
/// ```
/// Limit val to the inclusive range [lower, upper].
pub fn clamp(val: anytype, lower: anytype, upper: anytype) @TypeOf(val, lower, upper) {
assert(lower <= upper);
const T = @TypeOf(val, lower, upper);
switch (@typeInfo(T)) {
.Int, .Float, .ComptimeInt, .ComptimeFloat => assert(lower <= upper),
.Vector => |vinfo| switch (@typeInfo(vinfo.child)) {
.Int, .Float => assert(@reduce(.And, lower <= upper)),
else => @compileError("Expected vector of ints or floats, found " ++ @typeName(T)),
},
else => @compileError("Expected an int, float or vector of one, found " ++ @typeName(T)),
}
return @max(lower, @min(val, upper));
}
test clamp {
@ -533,6 +541,9 @@ test clamp {
try testing.expect(std.math.clamp(@as(f32, 1.1), @as(f32, 0.0), @as(f32, 1.0)) == 1.0);
try testing.expect(std.math.clamp(@as(f32, -127.5), @as(f32, -200), @as(f32, -100)) == -127.5);
// Vector
try testing.expect(@reduce(.And, std.math.clamp(@as(@Vector(3, f32), .{ 1.4, 15.23, 28.3 }), @as(@Vector(3, f32), .{ 9.8, 13.2, 15.6 }), @as(@Vector(3, f32), .{ 15.2, 22.8, 26.3 })) == @as(@Vector(3, f32), .{ 9.8, 15.23, 26.3 })));
// Mix of comptime and non-comptime
var i: i32 = 1;
_ = &i;