ptcon: condition number estimate

Functions
subroutine	cptcon (n, d, e, anorm, rcond, rwork, info)
	CPTCON
subroutine	dptcon (n, d, e, anorm, rcond, work, info)
	DPTCON
subroutine	sptcon (n, d, e, anorm, rcond, work, info)
	SPTCON
subroutine	zptcon (n, d, e, anorm, rcond, rwork, info)
	ZPTCON

Detailed Description