abs(a)     / |a|                            log10(a) / log of a base 10
acos(a)    / arc cosine of a                max(a,b)
asin(a)    / arc sine of a                  min(a,b)
atan(a)    / arc tangent of a               pow(a,b) / a to the power b
atan2(a,b) / arc tangent of a/b             random() / random n. in [0,1)
cbrt(a)    / cube root of a                 round(a) / integer closest to a
ceil(a)    / integer closest to a not < a   sign(a)  / sign of a 
cos(a)     / cosine of a                    sin(a)   / sine of a
exp(a)     / exponential of a               sqrt(a)  / square root of a
floor(a)   / integer closest to a not > a   tan(a)   / tangent of a
log(a)     / log of a base e                trunc(a) / integer portion of a
log2(a)    / log of a base 2                PI       / π

cosh(a),sinh(a),tanh(a), acosh(a),asinh(a),atanh(a)    hyperbolic functions

      Note:   M%N is the remainder of M/N,   != is "not equal"
                     Math.round(45.6789/10)*10 -> 50
                   Math.round(45.6789*100)/100 -> 45.68