Zig 0.17.0-dev (Split by item)

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negateCast

Returns the negation of the integer parameter. Result is a signed integer.

math.negateCast

pub fn negateCast(x: anytype) !@Int(.signed, @bitSizeOf(@TypeOf(x)))

File

lib/std/math.zig:1045

Code

pub fn negateCast(x: anytype) !@Int(.signed, @bitSizeOf(@TypeOf(x))) {
    if (@typeInfo(@TypeOf(x)).int.signedness == .signed) return negate(x);

    const int = @Int(.signed, @bitSizeOf(@TypeOf(x)));
    if (x > -minInt(int)) return error.Overflow;

    if (x == -minInt(int)) return minInt(int);

    return -@as(int, @intCast(x));
}