The names of mathematical functions defined in the SBML Level 1 Version 2 text-string formula syntax.

Name	Args	Formula or meaning	Argument Constraints	Result constraints
abs	x	absolute value of x
acos	x	arc cosine of x in radians	-1.0 ≤ x ≤ 1.0	0 ≤ acos(x) ≤ π
asin	x	arc sine of x in radians	-1.0 ≤ x ≤ 1.0	0 ≤ asin(x) ≤ π
atan	x	arc tangent of x in radians		0 ≤ atan(x) ≤ π
ceil	x	smallest number not less than x whose value is an exact integer
cos	x	cosine of x
exp	x	e x, where e is the base of the natural logarithm
floor	x	the largest number not greater than x whose value is an exact integer
log	x	natural logarithm of x	x > 0
log10	x	base 10 logarithm of x	x > 0
pow	x, y	x y
sqr	x	x2
sqrt	x	√x	x > 0	sqrt(x) ≥ 0
sin	x	sine of x
tan	x	tangent of x	x ≠ n*π/2, for odd integer n