This function evaluates the Weibull probability density function.

Function Return Value

WBLPR — Function value, the value of the probability density function.   (Output)

Required Arguments

X — Argument for which the Weibull probability density function is to be evaluated.   (Input)

A — Scale parameter.   (Input)

B — Shape parameter.   (Input)

FORTRAN 90 Interface

Generic:                              WBLPR (X, A, B)

Specific:                             The specific interface names are S_WBLPR and D_WBLPR.

FORTRAN 77 Interface

Single:                                WBLPR (X, A, B)

Double:                              The double precision name is DWBLPR.

Description

The function WBLPR evaluates the Weibull probability density function with scale parameter A and shape parameter B, defined

.

Example

In this example, we evaluate the Weibull probability density function at X = 1.5, A = 1.0, B = 2.0.

 

      USE UMACH_INT
      USE WBLPR_INT
      IMPLICIT NONE

      INTEGER NOUT

      REAL X, A, B, PR`

      CALL UMACH(2, NOUT)

      X = 1.5

      A = 1.0

      B = 2.0

      PR = WBLPR(X, A, B)

      WRITE (NOUT, 99999) X, A, B, PR

99999 FORMAT (' WBLPR(', F4.2, ', ', F4.2, ', ', F4.2, ') = ', F6.4)

      END

Output

 

WBLPR(1.50, 1.00, 2.00) = 0.3162

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