Functions Available

(The functions have the same syntax and behavior as in C. Note that the ^ (power) operator in DSL version 3.1 is no longer supported and has been replaced by the pow(x,y) function.)

cos(x): returns the cosine of x (x in radians)
sin(x): returns the sine of x (x in radians)
tan(x): returns the tangent of x (x in radians)
acos(x): returns the principal value of arccosine of x (x is between 0 and 1 and the result is between 0 and )
asin(x): returns the principal value of arcsine of x (x is between 0 and 1 and the result is between -/2 and /2)
atan(x): returns the principal value of arc tangent of x (the result is between -/2 and /2)
atan2(x,y): returns the principal value of arc tangent y/x, where the signs of x and y determine the quadrant of return value (between - and )
cosh(x): returns the hybolic cosine of x
sinh(x): returns the hybolic sine of x
tanh(x): returns the hybolic tangent of x
exp(x): returns the exponential function value of x
pow(x,y): returns the y-th power of x; y must be an integer if x is negative
log(x): returns the natural logarithm of x (x is positive)
log10(x): returns the base-ten logarithm of x (x is positive)
sqrt(x): returns the square root of x (x is positive)
hypot(x,y): returns sqrt(x*x+y*y)
abs(x): returns the absolute value of x
int(x): returns the truncated integer value of x
double(x): returns the floating-point value of x
ceil(x): returns the smallest integer not less than x
floor(x): returns the largest integer not greater than x
fmod(x,y): returns the floating point remainder of x divided by y (with the same sign as x)

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BTCL Language access The eval and expr Commands Logical and Arithmetic Operators