The following functions provide duplicate functionality that is available through the namespaced libraries or operators which may also offer better performance:
Abs by math.absAcos by math.acosAsin by math.asinAtan2 by math.atan2Ceil by math.ceilChar by string.char, utf8.charCos by math.cosFabs by math.fabsFloor by math.floorFrand by math.randomGetDate by os.dateGetTime by os.clockGetTimestamp by os.dateGetUnixTime by os.timeLog by math.logLog10 by math.log10ModPow by (a^b)%cOrd by string.byte, utf8.codepointPow by math.powRound by math.roundSin by math.sinSqrt by math.sqrtStringLength by #string, string.len, utf8.lenTan by math.tanToLower by string.lowerToUpper by string.upperVecDist by vector.magnitude(v1 - v2)VecMag by vector.magnitudeVecNorm by vector.normalize