Zig 0.17.0-dev (Split by item)

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floorPowerOfTwo

Returns the nearest power of two less than or equal to value, or zero if value is less than or equal to zero.

math.floorPowerOfTwo

pub fn floorPowerOfTwo(comptime T: type, value: T) T

File

lib/std/math.zig:1173

Code

pub fn floorPowerOfTwo(comptime T: type, value: T) T {
    const uT = @Int(.unsigned, @typeInfo(T).int.bits);
    if (value <= 0) return 0;
    return @as(T, 1) << log2_int(uT, @as(uT, @intCast(value)));
}