PetscDTTanhSinhIntegrateMPFR#

High-precision version of PetscDTTanhSinhIntegrate() that uses the MPFR arbitrary-precision library to evaluate the quadrature

Synopsis#

#include "petscdt.h" 
#if defined(PETSC_HAVE_MPFR)
PetscErrorCode PetscDTTanhSinhIntegrateMPFR(void (*func)(const PetscReal[], PetscCtx, PetscReal *), PetscReal a, PetscReal b, PetscInt digits, PetscCtx ctx, PetscReal *sol)

Not Collective; No Fortran Support

Input Parameters#

func - the integrand callback (func(x, ctx, &value) evaluates the integrand at point x)
a - lower limit of integration
b - upper limit of integration
digits - target number of correct decimal digits (also drives the working MPFR precision)
ctx - optional user context passed to func

Output Parameter#

sol - the approximate value of the integral

Note#

Requires PETSc to be configured with --with-mpfr; otherwise an error is raised.

Level#

developer

Location#

src/dm/dt/interface/dt.c

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