Programming Visual Basic .NET

Appendix E. Math Functions

Math functions are provided by the members of the Math class (defined in the System namespace). All members of the Math class are shared, so it is not necessary to instantiate the class before accessing its members. Members are simply accessed through the class name. For example, the following line computes the cosine of 45:

Dim result As Double = Math.Cos(45)

The Math class exposes two constants:

E

The base of natural logarithms.

PI

The ratio of the circumference of a circle to its diameter.

The methods of the Math class are as follows. Note that the trigonometric functions consider all angle values to be in radians.

Abs

Computes the absolute value of a number.

Acos

Computes the angle whose cosine is the given number.

Asin

Computes the angle whose sine is the given number.

Atan

Computes the angle whose tangent is the given number.

Atan2

Computes the angle whose tangent is equal to the quotient of the two given numbers.

Ceiling

Computes the smallest whole number greater than or equal to the given number.

Cos

Computes the cosine of a number.

Cosh

Computers the hyperbolic cosine of a number.

Exp

Computes e raised to a given power.

Floor

Computes the largest whole number less than or equal to a given number.

IEEERemainder

Calculates the remainder in the division of two numbers.

Log

Calculates the logarithm of a number (either the natural logarithm or in a given base).

Log10

Calculates the base 10 logarithm of a number.

Max

Returns the larger of two numbers.

Min

Returns the smaller ...