Source: exp4j

Constants:

Name	Constant
PI	pi or π
E	e
Golden Ratio	φ

Operators:

Name	Example	Precedence
Addition	2 + 2	20
Subtraction	2 - 2	20
Multiplication	2 * 2	30
Division	2 / 2	30
Power	2 ^ 2	80
Unary Minus & Plus (Sign Operators)	+2 - (-2)	60
Modulo (remainder of division)	2 % 2	30

Functions:

General:

Name	Function	Description
Natural logarithm (base e)	log(x)
Logarithm (base 2)	log2(x)
Logarithm (base 10)	log10(x)
Logarithm of x + 1	log1p(x)
Absolute value	abs(x)
Cubic root	cbrt(x)
Nearest lower integer	floor(x)
Square root	sqrt(x)
Nearest upper integer	ceil(x)
Power (x ^ y)	pow(x, y)
e^x	exp(x)
e^x - 1	expm1(x)
Signum	signum(x)	Returns -1, 0, or 1 as the value of x is negative, zero, or positive.
Arbitrary base logarithm	logb(value, base)	log(value) / log(base)
Radian conversion	toradian(x)
Degree conversion	todegree(x)

Trigonometric:

Name	Function	Description
Sine	sin(x)
Cosine	cos(x)
Tangent	tan(x)
Cotangent	cot(x)	1 / tan(x)
Arc cosine	acos(x)
Arc sine	asin(x)
Arc tangent	atan(x)
Hyperbolic sine	sinh(x)
Hyperbolic tangent	tanh(x)
Hyperbolic cosine	cosh(x)
Cosecant	csc(x)	1 / sin(x)
Secant	sec(x)	1 / cos(x)
Hyperbolic cosecant	csch(x)	1 / sinh(x)
Hyperbolic secant	sech(x)	1 / cosh(x)
Hyperbolic cotangent	coth(x)	cosh(x) / sinh(x)

Extra:

Function	Description
rand(x, y)	Generate a random number from x to y.
prob(p, x, y)	A random (p%) chance to return x, else return y.
min(x, y)	Return the minimum of x or y.
max(x, y)	Return the maximum of x or y.
select(v, x, y, z)	If v < 0, return x, if v = 0 return y, if v > 0 return z.