Learning AWK Programming

Summary table of built-in arithmetic functions

The following table summarizes the different built-in arithmetic functions available in AWK:

Function	Value returned
sin(x)	Returns the sine of x, with x in radians
cos(x)	Returns the cosine of x, with x in radians
atan2(x,y)	Returns the arc tangent of x/y in the range of -22/7 to +22/7
int(x)	Returns the integer part of x, truncated towards 0
log(x)	Returns the natural (base-e) logarithm of x
exp(x)	Returns e to the power of x , e^x
sqrt(x)	Returns the square root of x
rand()	Generates the random number x, where 0 <= x < 1
srand()	X is the new seed value for rand()