Module PCHQA in NMS

• NMS Information

• Components
  • Documentation from ITL
  • Fullsource from ITL
  • Sample from ITL
  • Source from ITL

PCHQA

 
Integrates piecewise cubic from A to B given N-arrays X,F,D. Usually used in
conjunction with PCHEZ to form cubic, but can be used independently, especially
if the abscissas are equally spaced.
 
Classes  :  E3a3 .   Quadrature involving fitted functions
            H2a1b2 . Nonautomatic 1-D finite interval quadrature, integrand
                   available only on a grid
            K6a3 .   Quadrature involving fitted functions
 
Type     : Fortran software in NMS collection.
Access   : Public domain. Portable.
Precision: Single.
 
Usage    : CALL PCHQA(N,X,F,D,A,B,IERR)
 
See also : PCHEZ
 
Details  : Documentation Fullsource Sample Source
Sites    : (1) ITL
 

Implementation of PCHQA from NMS on ITL

 
ITL:       Unix Workstation Network, National Institute of Standards and
           Technology (NIST), Gaithersburg, MD. Available to NIST staff.
 
Precision: Single. (Double: DPCHQA)