H2a1a. One dimensional finite interval quadrature (automatic quadrature)

Functions
void	_defint (double(*f)(double), double a, double b, double eps, int l, double *result, int *neval, int *info)
	Finite interval automatic quadrature (double exponential (DE) formula)
void	_defint_r (double a, double b, double eps, int l, double *result, int *neval, int *info, double *xx, double yy, int *irev)
	Finite interval automatic quadrature (double exponential (DE) formula) (reverse communication version)
void	_qag (double(*f)(double), double a, double b, double epsabs, double epsrel, int key, int limit, double *result, double *abserr, int *neval, int *last, double work[], int lwork, int iwork[], int *info)
	Finite interval adaptive quadrature (15/21/31/41/51/61 point Gauss-Kronrod rule)
void	_qag_r (double a, double b, double epsabs, double epsrel, int key, int limit, double *result, double *abserr, int *neval, int *last, double work[], int lwork, int iwork[], int *info, double *xx, double yy, int *irev)
	Finite interval adaptive quadrature (15/21/31/41/51/61 point Gauss-Kronrod rule) (reverse communication version)
void	_qags (double(*f)(double), double a, double b, double epsabs, double epsrel, int limit, double *result, double *abserr, int *neval, int *last, double work[], int lwork, int iwork[], int *info)
	Finite interval adaptive quadrature with sigularities (21 point Gauss-Kronrod rule)
void	_qags_r (double a, double b, double epsabs, double epsrel, int limit, double *result, double *abserr, int *neval, int *last, double work[], int lwork, int iwork[], int *info, double *xx, double yy, int *irev)
	Finite interval adaptive quadrature with sigularities (21 point Gauss-Kronrod rule) (reverse communication version)
void	_qng (double(*f)(double), double a, double b, double epsabs, double epsrel, double *result, double *abserr, int *neval, int *info)
	Finite interval automatic quadrature (21/43/87 point Gauss-Kronrod rule)
void	_qng_r (double a, double b, double epsabs, double epsrel, double *result, double *abserr, int *neval, int *info, double *xx, double yy, int *irev)
	Finite interval automatic quadrature (21/43/87 point Gauss-Kronrod rule) (reverse communication version)

Detailed Description

This is the group of H2a1a. One dimensional finite interval quadrature (automatic quadrature).