Quaternion.opOpAssign

Undocumented in source. Be warned that the author may not have intended to support it.
  1. void opOpAssign(Quaternion q)
  2. void opOpAssign(valueType q)
  3. void opOpAssign(Quaternion q)
    struct Quaternion(type)
    nothrow @nogc pure nothrow @nogc pure nothrow @nogc @safe
    void
    opOpAssign
    (
    string op
    )
    if (
    (op == "+") ||
    (op == "-")
    )

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