normcdf

1 Description
2 Syntax
3 Parameters
4 Return
5 Examples
6 Remark
7 See Also
8 header to Include
9 Reference

Description

Normal (Gaussian) cdf

Syntax

double normcdf( const double dX, int iTail = TAILED_TEST_LOWER, int * nFail = NULL )

Parameters

dX: [input] value of the standard Normal variate .
iTail: [input]; 1( TAILED_TEST_UPPER )for upper tail,; 2 ( TAILED_TEST_LOWER) for lower tail.; 3( TAILED_TEST_TWO_SIGN_IF), the two tail (significance level) probability is returned,; 4( TAILED_TEST_TWO_CONFID), the two tail (confidence interval) probability is returned
nFail: [output] on successful exit, it returns the NAG error code NE_NOERROR; if an error or warning has been detected, then it returns the specific error or warning code.

Return

Returns standardized normal cumulative distribution function

Examples

EX1

void normcdf_ex1()
{
        double dX[]= {0.25, 0.5, 0.75};
        for(int ii = 0; ii<3; ii++)
                printf("%f:    %f\n", dX[ii], normcdf(dX[ii]));
}