made test for chol positive definite
made test for chol positive definite

nxdao2000/nimble,NLMichaud/nimble,nimble-dev/nimble,nxdao2000/nimble,nimble-dev/nimble,NLMichaud/nimble,NLMichaud/nimble,nimble-dev/nimble,nxdao2000/nimble,nimble-dev/nimble,nxdao2000/nimble,NLMichaud/nimble,nimble-dev/nimble