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Modify GEMM to handle m=0, n=0, and k=0 cases.

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This commit is contained in:
Eric Martin 2015-07-11 21:46:13 -05:00
parent e6297741c9
commit 002c2923c2
1 changed files with 6 additions and 0 deletions
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6
blas/level3_impl.h
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@ -50,12 +50,18 @@ int EIGEN_BLAS_FUNC(gemm)(char *opa, char *opb, int *m, int *n, int *k, RealScal
if(info)
return xerbla_(SCALAR_SUFFIX_UP"GEMM ",&info,6);
if (*m == 0 || *n == 0)
return 0;
if(beta!=Scalar(1))
{
if(beta==Scalar(0)) matrix(c, *m, *n, *ldc).setZero();
else matrix(c, *m, *n, *ldc) *= beta;
}
if(*k == 0)
return 0;
internal::gemm_blocking_space<ColMajor,Scalar,Scalar,Dynamic,Dynamic,Dynamic> blocking(*m,*n,*k,1,true);
int code = OP(*opa) | (OP(*opb) << 2);