ACOS() - Arccosine

Returns the arccosine of a number. The number must be between -1 and 1.

Returns

Double value if successful. If an error occurs, this function returns a zero.

Arguments

Type	Field	Description
double	dNumber	Value

16 bit DLL declarations

PowerBuilder Function declaration

function double ACOS(double dNumber) library "IFL16.DLL"

Visual Basic Function declaration

Declare Function ACOS lib "IFL16" (ByVal dNumber As Double) As Double

32 bit DLL declarations

PowerBuilder Function declaration

function double ACOS(double dNumber) library "IFL32.DLL"

Visual Basic Function declaration

Declare Function ACOS lib "IFL32" (ByVal dNumber As Double) As Double

Example:

dNumber

=

-0.5

Result: 2.094395