| Subroutine | Description | Category | Author |
|---|---|---|---|
| passb | Calculate the fast Fourier transform of subvectors of arbitrary length. | none | Swarztrauber, P. N., (NCAR) |
| passb2 | Calculate the fast Fourier transform of subvectors of length two. | none | Swarztrauber, P. N., (NCAR) |
| passb3 | Calculate the fast Fourier transform of subvectors of length three. | none | Swarztrauber, P. N., (NCAR) |
| passb4 | Calculate the fast Fourier transform of subvectors of length four. | none | Swarztrauber, P. N., (NCAR) |
| passb5 | Calculate the fast Fourier transform of subvectors of length five. | none | Swarztrauber, P. N., (NCAR) |
| passf | Calculate the fast Fourier transform of subvectors of arbitrary length. | none | Swarztrauber, P. N., (NCAR) |
| passf2 | Calculate the fast Fourier transform of subvectors of length two. | none | Swarztrauber, P. N., (NCAR) |
| passf3 | Calculate the fast Fourier transform of subvectors of length three. | none | Swarztrauber, P. N., (NCAR) |
| passf4 | Calculate the fast Fourier transform of subvectors of length four. | none | Swarztrauber, P. N., (NCAR) |
| passf5 | Calculate the fast Fourier transform of subvectors of length five. | none | Swarztrauber, P. N., (NCAR) |
| pchbs | Piecewise Cubic Hermite to B-Spline converter. | E3 | Fritsch, F. N., (LLNL) |
| pchce | Set boundary conditions for PCHIC | none | Fritsch, F. N., (LLNL) 910408 Updated AUTHOR section in pro logue. (WRB) |
| pchci | Set interior derivatives for PCHIC | none | Fritsch, F. N., (LLNL) 910408 Updated AUTHOR section in pro logue. (WRB) |
| pchcm | Check a cubic Hermite function for monotonicity. | E3 | Fritsch, F. N., (LLNL) |
| pchcs | Adjusts derivative values for PCHIC | none | Fritsch, F. N., (LLNL) 910408 Updated AUTHOR section in pro logue. (WRB) |
| pchdf | Computes divided differences for PCHCE and PCHSP | none | Fritsch, F. N., (LLNL) 910408 Updated AUTHOR and DATE WRITTEN sections in prologue. (WRB) |
| pchdoc | Documentation for PCHIP, a Fortran package for piecewise cubic Hermite interpolation of data. | E1A, | Fritsch, F. N., (LLNL) |
| pchfd | Evaluate a piecewise cubic Hermite function and its first deriva tive at an array of points. May be used by itself for Hermite interpolation, or as an evaluator for PCHIM or PCHIC. If only function values are required, use PCHFE instead. | E3, | Fritsch, F. N., (LLNL) |
| pchfe | Evaluate a piecewise cubic Hermite function at an array of points. May be used by itself for Hermite interpolation, or as an evaluator for PCHIM or PCHIC. | E3 | Fritsch, F. N., (LLNL) |
| pchia | Evaluate the definite integral of a piecewise cubic Hermite func tion over an arbitrary interval. | E3, | Fritsch, F. N., (LLNL) |
| pchic | Set derivatives needed to determine a piecewise monotone piece wise cubic Hermite interpolant to given data. User control is available over boundary conditions and/or treatment of points where monotonicity switches direction. | E1A | Fritsch, F. N., (LLNL) |
| pchid | Evaluate the definite integral of a piecewise cubic Hermite func tion over an interval whose endpoints are data points. | E3, | Fritsch, F. N., (LLNL) |
| pchim | Set derivatives needed to determine a monotone piecewise cubic Hermite interpolant to given data. Boundary values are provided which are compatible with monotonicity. The interpolant will have an extremum at each point where mono- tonicity switches di | E1A | Fritsch, F. N., (LLNL) |
| pchkt | Compute B-spline knot sequence for PCHBS. | E3 | Fritsch, F. N., (LLNL) |
| pchngs | Subsidiary to SPLP | none | Hanson, R. J., (SNLA) 910403 Updated AUTHOR and DESCRIPTION sec tions. (WRB) |
| pchsp | Set derivatives needed to determine the Hermite represen- tation of the cubic spline interpolant to given data, with specified boundary conditions. | E1A | Fritsch, F. N., (LLNL) |
| pchst | PCHIP Sign-Testing Routine | none | Fritsch, F. N., (LLNL) 910408 Updated AUTHOR and DATE WRITTEN sections in prologue. (WRB) |
| pchsw | Limits excursion from data for PCHCS | none | Fritsch, F. N., (LLNL) 910408 Updated AUTHOR and DATE WRITTEN sections in prologue. (WRB) |
| pcoef | Convert the POLFIT coefficients to Taylor series form. | K1A1A2 | Shampine, L. F., (SNLA) |
| pfqad | Compute the integral on (X1,X2) of a product of a function F and the ID-th derivative of a B-spline, (PP-representation). | H2A2A1, | Amos, D. E., (SNLA) |
| pgsf | Subsidiary to CBLKTR | none | (UNKNOWN) |
| pimach | Subsidiary to HSTCSP, HSTSSP and HWSCSP | none | (UNKNOWN) |
| pinitm | Subsidiary to SPLP | none | Hanson, R. J., (SNLA) 910403 Updated AUTHOR and DESCRIPTION sec tions. (WRB) |
| pjac | Subsidiary to DEBDF | none | Watts, H. A., (SNLA) 910722 Updated AUTHOR section. (ALS) |
| pnnzrs | Subsidiary to SPLP | none | Hanson, R. J., (SNLA) 910403 Updated AUTHOR and DESCRIPTION sec tions. (WRB) |
| poch | Evaluate a generalization of Pochhammer's symbol. | C1, | Fullerton, W., (LANL) |
| poch1 | Calculate a generalization of Pochhammer's symbol starting from first order. | C1, | Fullerton, W., (LANL) |
| pois3d | Solve a three-dimensional block tridiagonal linear system which arises from a finite difference approximation to a three-dimen sional Poisson equation using the Fourier transform package FFT PAK written by Paul Swarztrauber. | I2B4B | Adams, J., (NCAR) |
| poisd2 | Subsidiary to GENBUN | none | (UNKNOWN) |
| poisn2 | Subsidiary to GENBUN | none | (UNKNOWN) |
| poisp2 | Subsidiary to GENBUN | none | (UNKNOWN) |
| poistg | Solve a block tridiagonal system of linear equations that results from a staggered grid finite difference approximation to 2-D el liptic PDE's. | I2B4B | Adams, J., (NCAR) |
| polcof | Compute the coefficients of the polynomial fit (including Hermite polynomial fits) produced by a previous call to POLINT. | E1B | Huddleston, R. E., (SNLL) |
| polfit | Fit discrete data in a least squares sense by polynomials in one variable. | K1A1A2 | Shampine, L. F., (SNLA) |
| polint | Produce the polynomial which interpolates a set of discrete data points. | E1B | Huddleston, R. E., (SNLL) |
| polyvl | Calculate the value of a polynomial and its first NDER deriva tives where the polynomial was produced by a previous call to POLINT. | E3 | Huddleston, R. E., (SNLL) |
| pos3d1 | Subsidiary to POIS3D | none | (UNKNOWN) |
| postg2 | Subsidiary to POISTG | none | (UNKNOWN) |
| ppadd | Subsidiary to BLKTRI | none | (UNKNOWN) |
| ppgq8 | Subsidiary to PFQAD | none | Jones, R. E., (SNLA) 910408 Updated the AUTHOR section. (WRB) |
| ppgsf | Subsidiary to CBLKTR | none | (UNKNOWN) |
| pppsf | Subsidiary to CBLKTR | none | (UNKNOWN) |
| ppqad | Compute the integral on (X1,X2) of a K-th order B-spline using the piecewise polynomial (PP) representation. | H2A2A1, | Amos, D. E., (SNLA) |
| ppsgf | Subsidiary to BLKTRI | none | (UNKNOWN) |
| ppspf | Subsidiary to BLKTRI | none | (UNKNOWN) |
| ppval | Calculate the value of the IDERIV-th derivative of the B-spline from the PP-representation. | E3, | Amos, D. E., (SNLA) |
| proc | Subsidiary to CBLKTR | none | (UNKNOWN) |
| procp | Subsidiary to CBLKTR | none | (UNKNOWN) |
| prod | Subsidiary to BLKTRI | none | (UNKNOWN) |
| prodp | Subsidiary to BLKTRI | none | (UNKNOWN) |
| prvec | Subsidiary to BVSUP | none | Watts, H. A., (SNLA) 910722 Updated AUTHOR section. (ALS) |
| prwpge | Subsidiary to SPLP | none | Hanson, R. J., (SNLA) 910403 Updated AUTHOR and DESCRIPTION sec tions. (WRB) |
| prwvir | Subsidiary to SPLP | none | Hanson, R. J., (SNLA) 910403 Updated AUTHOR and DESCRIPTION sec tions. (WRB) |
| psgf | Subsidiary to BLKTRI | none | (UNKNOWN) |
| psi | Compute the Psi (or Digamma) function. | C7C | Fullerton, W., (LANL) |
| psifn | Compute derivatives of the Psi function. | C7C | Amos, D. E., (SNLA) |
| psixn | Subsidiary to EXINT | none | Amos, D. E., (SNLA) 910722 Updated AUTHOR section. (ALS) |
| pvalue | Use the coefficients generated by POLFIT to evaluate the polyno mial fit of degree L, along with the first NDER of its deriva tives, at a specified point. | K6 | Shampine, L. F., (SNLA) |
| pythag | Compute the complex square root of a complex number without de structive overflow or underflow. | none | (UNKNOWN) |