The table summarizes the mathematical functions available in APL.
| Name | Description |
|---|---|
| abs | Calculates the absolute value of the input. |
| acos | Returns the angle whose cosine is the specified number (the inverse operation of cos()). |
| asin | Returns the angle whose sine is the specified number (the inverse operation of sin()). |
| atan | Returns the angle whose tangent is the specified number (the inverse operation of tan()). |
| atan2 | Calculates the angle, in radians, between the positive x-axis and the ray from the origin to the point (y, x). |
| cos | Returns the cosine function. |
| cot | Returns the cotangent function. |
| degrees | Converts angle value in radians into value in degrees. |
| exp | The base-e exponential function of x: e^x. |
| exp10 | The base-10 exponential function of x: 10^x. |
| exp2 | The base-2 exponential function of x: 2^x. |
| gamma | Computes the gamma function. |
| isfinite | Returns whether input is a finite value (neither infinite nor NaN). |
| isinf | Returns whether input is an infinite (positive or negative) value. |
| isint | Returns whether input is an integer (positive or negative) value. |
| isnan | Returns whether input is a Not a Number (NaN) value. |
| log | Returns the natural logarithm function. |
| log10 | Returns the common (base-10) logarithm function. |
| log2 | Returns the base-2 logarithm function. |
| loggamma | Computes log of absolute value of the gamma function. |
| max_of | Returns the largest of the provided values. |
| min_of | Returns the smallest of the provided values. |
| not | Reverses the value of its bool argument. |
| pi | Returns the constant value of Pi (π). |
| pow | Returns a result of raising to power. |
| radians | Converts angle value in degrees into value in radians. |
| rand | Returns pseudo-random numbers. |
| range | Returns a dynamic array of evenly spaced values. |
| round | Returns the rounded source to the specified precision. |
| set_difference | Returns the difference between two arrays. |
| set_has_element | Determines if a set contains a specific value. |
| set_intersect | Returns the intersection of two arrays. |
| set_union | Returns the union of two arrays. |
| sign | Sign of a numeric expression. |
| sin | Returns the sine function. |
| sqrt | Returns the square root function. |
| tan | Returns the tangent function. |