Function floatEpsAt [src]

Returns the local epsilon of floating point type T.

Prototype

pub inline fn floatEpsAt(comptime T: type, x: T) T

Parameters

T: typex: T

Source

  pub inline fn floatEpsAt(comptime T: type, x: T) T {
    switch (@typeInfo(T)) {
        .float => |F| {
            const U: type = @Type(.{ .int = .{ .signedness = .unsigned, .bits = F.bits } });
            const u: U = @bitCast(x);
            const y: T = @bitCast(u ^ 1);
            return @abs(x - y);
        },
        else => @compileError("floatEpsAt only supports floats"),
    }
}  