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This is an example of documentation generated by ZigDoc, an alternative to Zig's built-in Auto Doc feature. See also examples in other modes/formats. The project being documented here (as the example) is the Zig standard library. Public Function

decodedLen

Doc Source

Public Function

std.crypto.codecs.base64_hex_ct.base64.decodedLen

pub fn decodedLen(b64_len: usize, variant: Variant) !usize

Returns the maximum possible decoded size for a given input length - The actual length may be less if the input includes padding. InvalidPadding is returned if the input length is not valid.

Params

b64_len: usize
variant: Variant

File

crypto/codecs/base64_hex_ct.zig:177

    pub fn decodedLen(b64_len: usize, variant: Variant) !usize {
        var result = b64_len / 4 * 3;
        const leftover = b64_len % 4;
        if (variant.padding) {
            if (leftover % 4 != 0) return error.InvalidPadding;
        } else {
            if (leftover % 4 == 1) return error.InvalidPadding;
            result += leftover * 3 / 4;
        }
        return result;
    }