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<div id="version" align=right><b>petsc-3.14.5 2021-03-03</b></div>
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<A NAME="PetscDTJacobiEval"><H1>PetscDTJacobiEval</H1></A>
evaluate Jacobi polynomials for the weight function $(1.+x)^{\alpha} (1.-x)^{\beta}$ at points
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscdt.h"
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../DT/PetscDTJacobiEval.html#PetscDTJacobiEval">PetscDTJacobiEval</A>(<A HREF="../Sys/PetscInt.html#PetscInt">PetscInt</A> npoints,<A HREF="../Sys/PetscReal.html#PetscReal">PetscReal</A> alpha, <A HREF="../Sys/PetscReal.html#PetscReal">PetscReal</A> beta, const <A HREF="../Sys/PetscReal.html#PetscReal">PetscReal</A> *points,<A HREF="../Sys/PetscInt.html#PetscInt">PetscInt</A> ndegree,const <A HREF="../Sys/PetscInt.html#PetscInt">PetscInt</A> *degrees,<A HREF="../Sys/PetscReal.html#PetscReal">PetscReal</A> *B,<A HREF="../Sys/PetscReal.html#PetscReal">PetscReal</A> *D,<A HREF="../Sys/PetscReal.html#PetscReal">PetscReal</A> *D2)
</PRE>
Not Collective
<P>
<H3><FONT COLOR="#CC3333">Input Arguments</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>npoints </B></TD><TD>- number of spatial points to evaluate at
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>alpha </B></TD><TD>- the left exponent > -1
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>beta </B></TD><TD>- the right exponent > -1
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>points </B></TD><TD>- array of locations to evaluate at
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>ndegree </B></TD><TD>- number of basis degrees to evaluate
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>degrees </B></TD><TD>- sorted array of degrees to evaluate
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Output Arguments</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>B </B></TD><TD>- row-oriented basis evaluation matrix B[point*ndegree + degree] (dimension npoints*ndegrees, allocated by caller) (or NULL)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>D </B></TD><TD>- row-oriented derivative evaluation matrix (or NULL)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>D2 </B></TD><TD>- row-oriented second derivative evaluation matrix (or NULL)
</TD></TR></TABLE>
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../DT/PetscDTGaussQuadrature.html#PetscDTGaussQuadrature">PetscDTGaussQuadrature</A>()
<BR><P><B></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>intermediate<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../src/dm/dt/interface/dt.c.html#PetscDTJacobiEval">src/dm/dt/interface/dt.c</A>
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