www.gusucode.com > 用matlab仿真0到9十个数字的语音识别源码程序 > Speech-Recogenition/isposdef.m
function b = isposdef(a) % ISPOSDEF Test for positive definite matrix. % ISPOSDEF(A) returns 1 if A is positive definite, 0 otherwise. % Using chol is much more efficient than computing eigenvectors. % From Tom Minka's lightspeed toolbox [R,p] = chol(a); b = (p == 0);