Function Plotter: Supported Functions
The following functions, operators and constants are pre-defined in Oberon Function Plotter:
| Functions | |
| abs(t) | Returns the absolute value of a number, a number without its sign. |
| arccos(t) | Returns the arccosine of a number, in radians in the range 0 to Pi. |
| arccosh(t) | Returns the inverse hyperbolic cosine of a number. |
| arcsin(t) | Returns the arcsine of a number in radians, in the range -Pi/2 to Pi/2. |
| arcsinh(t) | Returns the inverse hyperbolic sine of a number. |
| arctan(t) | Returns the arctangent of a number in radians, in the range -Pi/2 to Pi/2. |
| arctan2(ty,tx) | Returns the arctangent of the specified x and y coordinates, in radians between -Pi and Pi, excluding -Pi. |
| arctanh(t) | Returns the inverse hyperbolic tangent of a number |
| ceil(t) | Rounds a number up, to the nearest integer |
| cos(t) | Returns the cosine of an angle |
| cosh(t) | Returns the hyperbolic cosine of a number |
| degrees(t) | Converts radians to degrees. |
| exp(t) | Returns e raised to the power of a given number. |
| fact(t) | Returns the factorial of a number, x! |
| fix(t) | Returns the integer part of a number. |
| floor(t) | Rounds a number down, to the nearest integer |
| frac(t) | Returns the fractional part of a number. |
| if(t,a,b) | Returns the value of a if t is not zero, otherwise returns b. |
| integrate(f(x),x,a,b,dx) | Returns a numerical approximation to the integral of f with respect to x from a to b. dx is an optional parameter representing the step of integration. |
| ln(t) | Returns the natural logarithm of a number. |
| log(t,base) | Returns the logarithm of a number to the given base. |
| log10(t) | Returns the base-10 logarithm of a number. |
| max(a,b) | Returns a greater number of a or b. |
| min(a,b) | Returns a lesser number of a or b. |
| mod(t,divisor) | Returns the remainder after a number is divided by a divisor. |
| product(expr,n,n1,n2,s) | Evaluates the expression 'expr' for each integer value of index 'n' from 'n1' to 'n2' and multiplies the results up. If the step 's' value is not specified, 1 is assumed |
| radians(t) | Converts degrees to radians. |
| rand(t) | Returns a random number greater than or equal to 0 and less than 1. Parameter is optional. If omitted or positive, returns next random number. If zero, returns last generated number. If negative, resets the generator to a new sequence using the value as random seed. |
| sign(t) | Returns the sign of a number: 1 if the number is positive, zero if the number is zero, or -1 if the number is negative. |
| sin(t) | Returns the sine of an angle. |
| sinh(t) | Returns the hyperbolic sine of a number. |
| sqrt(t) | Returns a square root of a number. |
| sum(expr,n,n1,n2,s) | Evaluates the expression 'expr' for each integer value of index 'n' from 'n1' to 'n2' and adds up the results. If the step 's' value is not specified, 1 is assumed |
| tan(t) | Returns the tangent of an angle. |
| tanh(t) | Returns the hyperbolic tangent of a number. |
| Operators | |
| + | Addition: A + B |
| - | Subtraction: A - B |
| * | Multiplication: A * B |
| / | Division: A / B |
| ^ | Power: A ^ B |
| & | Logical AND: (A & B) = 1 if both A and B are not zero, 0 otherwise |
| | | Logical OR: (A | B) = 1 if either A or B is not zero, 0 otherwise |
| ! | Logical NOT: (!A) = 1 if A is zero, 0 otherwise |
| > | Greater than: (A > B) = 1 if A is greater than B |
| < | Less than: (A < B) = 1 if A is less than B |
| >= | Greater than or equal to: (A >= B) = 1 if A is greater than or equal to B |
| <= | Less than or equal to: A <= B = 1 if A is less than or equal to B |
| = | Greater than or equal to: (A = B) = 1 if A is equal to B |
| <> | Less than or equal to: A <> B = 1 if A is not equal to B |
| Constants | |
| pi | Returns the value of Pi, 3.14159265358979 |
| e | Returns the value of the base of natural logarithm, 2.71828182845905 |