Usual functions

• max takes as argument two real numbers and returns their maximum,
• min takes as argument two real numbers and returns their minimum,
• abs takes as argument a complex number and returns the modulus of the complex parameter (the absolute value if the complex is real),
• sign takes as argument a real number and returns its sign (+1 if it is positive, 0 if it is null, and -1 if it is negative),
• floor (or iPart) takes as argument a real number r, and returns the largest integer $\leq$ r,
• round takes as argument a real number and returns it's nearest integer,
• ceil or ceiling takes as argument a real number and returns the smallest integer $\geq$ r
• frac (or fPart) takes as argument a real number and returns its fractionnal part,
• trunc takes as argument a real number and returns the integer equal to the real without its fractionnal part,
• id is the identity function,
• sq is the square function,
• sqrt is the squareroot function,
• exp is the exponential function,
• log or ln is the natural logarithm function,
• log10 is the base-10 logarithm function,
• logb is the logarithm function where the second argument is the basis of the logarithm: logb(7,10)=log10(7)=log(7)/log(10),
• sin (resp. cos, tan) is the sinus function, cosinus function, tangent function,
• cot, sec, csc are the cotangeant, secant, cosecant function
• asin (or arcsin), acos (or arccos), atan (or arctan), acot, asec, acsc are the inverse trigonometric functions (see section 1.21.1 for more info on trigonometric functions)
• sinh (resp. cosh, tanh) is the hyperbolic sinus function, cosinus function, tangent function,
• asinh or arcsinh (resp acosh or arccosh, atanh or arctanh) is the inverse function of sinh (resp cosh, tanh)