source:
proiecte/pmake3d/make3d_original/Make3dSingleImageStanford_version0.1/third_party/lightspeed/isposdef.m
Last change on this file was 37, checked in by , 15 years ago | |
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File size: 264 bytes |
Rev | Line | |
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[37] | 1 | function b = isposdef(a) |
2 | % ISPOSDEF Test for positive definite matrix. | |
3 | % ISPOSDEF(A) returns 1 if A is positive definite, 0 otherwise. | |
4 | % Using chol is much more efficient than computing eigenvectors. | |
5 | ||
6 | % Written by Tom Minka | |
7 | ||
8 | [R,p] = chol(a); | |
9 | b = (p == 0); |
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