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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

sub

Public Function
std.math.big.int.Managed.sub
pub fn sub(r: *Managed, a: *const Managed, b: *const Managed) !void

r = a - b

r, a and b may be aliases.

Returns an error if memory could not be allocated.

Params

File

math/big/int.zig:3202
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    pub fn sub(r: *Managed, a: *const Managed, b: *const Managed) !void {
        const aliased = limbsAliasDistinct(r, a) or limbsAliasDistinct(r, b);
        const needed = @max(a.len(), b.len()) + 1;
        try r.ensureAliasAwareCapacity(needed, aliased);
        var m = r.toMutable();
        m.sub(a.toConst(), b.toConst());
        r.setMetadata(m.positive, m.len);
    }