Generates a vector of random variates from an exponential distribution with probability density function, \(f (X)\), where:
\[f (X) = \frac{e^{\frac{-X}{A}}}{A}\]
if \(X > 0\), otherwise \(f (X) = 0\).
C Generate 100 values from the Exponential distribution
INTEGER LSTATE,N
PARAMETER (LSTATE=16,N=100)
INTEGER I,INFO,SEED(1),STATE(LSTATE)
DOUBLE PRECISION A
DOUBLE PRECISION X(N)
C Set the seed
SEED(1) = 1234
C Read in the distributional parameters
READ(5,*) A
C Initialize the STATE vector
CALL DRANDINITIALIZE(1,1,SEED,1,STATE,LSTATE,INFO)
C Generate N variates from the Exponential distribution
CALL DRANDEXPONENTIAL(N,A,STATE,X,INFO)
C Print the results
WRITE(6,*) (X(I),I=1,N)