CAD tip # 9248:

  
+ addition
- subtraction  
% modulo  
* multiplication
/ division
^ power 
() expression delimiter
; argument delimiter

Supported function:

  
cos(expr)  
sin(expr)  
tan(expr)  
acos(expr)  
asin(expr)  
atan(expr)  
cosh(expr)  
sinh(expr)  
tanh(expr)  
acosh(expr)  
asinh(expr)  
atanh(expr)  
sqrt(expr) - square root
sign(expr) - signum 0/1  
exp(expr) - e^x  
floor(expr) - next lower integer 
ceil(expr) - next higher integer 
round(expr) - round to integer 
abs(expr)  
max(expr1;expr2)  
min(expr1;expr2)  
ln(expr) - natural logarithm 
log(expr) - decimal logarithm  
pow(expr1; expr2)  
random() - random number 
isolate(expr;unit;unit)