Category Mathematical Functions

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Mathematical Functions

Grouped by task. Numbers and math lists them beside the rest of the area.

Round a number

Function	What it does	From
Int	Returns the largest whole number not above the value, so Int(-1.3) is -2.	built-in
Fix	Returns the whole-number part, rounding towards zero, so Fix(-4.9) is -4.	built-in
Frac	Returns the fractional part, keeping the sign, so Frac(-1.75) is -0.75.	built-in

Absolute value, sign, smaller and larger

Function	What it does	From
Abs	Returns the absolute value of a number.	built-in
Sgn	Returns -1, 0 or 1 for the sign of a number, in the number's own type.	built-in

Powers, roots and logarithms

Function	What it does	From
Sqr	Returns the square root of a number.	built-in
Exp	Returns e raised to a power.	built-in
Log	Returns the natural logarithm; zero gives minus infinity and a negative gives NaN.	built-in

Trigonometry and angles

Function	What it does	From
Sin	Returns the sine of an angle in radians.	built-in
Cos	Returns the cosine of an angle in radians.	built-in
Tan	Returns the tangent of an angle in radians.	built-in
Asin	Returns the angle in radians, from -pi/2 to pi/2, whose sine is the number.	built-in
Acos	Returns the angle in radians, from 0 to pi, whose cosine is the number.	built-in
Atn	Returns the angle in radians, from -pi/2 to pi/2, whose tangent is the number.	built-in
Atan2	Returns the angle in radians, from -pi to pi, of the point at x, y.	built-in

Random numbers

Function	What it does	From
Rnd	Returns a random Double from 0 up to but not including 1.	built-in
Randomize	Seeds the random number generator that Rnd uses, and can choose its algorithm.	built-in

Also in this category

• Double
• Mathematical Functions

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