added safety checks whether the matrix is non-NULL

svn path=/trunk/externals/iem/iemmatrix/; revision=2948

2 files changed, 7 insertions, 2 deletions

diff --git a/src/mtx_mul.c b/src/mtx_mul.c
index ef0f12b..8272d53 100644
--- a/src/mtx_mul.c
+++ b/src/mtx_mul.c
@@ -24,13 +24,16 @@
 */
 
 t_matrixfloat*mtx_doMultiply(int rowA, t_matrixfloat*A, int colArowB, t_matrixfloat*B, int colB){
-  t_matrixfloat*result=(t_matrixfloat*)getbytes(sizeof(t_matrixfloat)*rowA*colB);
+  t_matrixfloat*result=0;
+  if(!A || !B || !rowA || !colArowB || !colB)return 0;
+  result=(t_matrixfloat*)getbytes(sizeof(t_matrixfloat)*rowA*colB);
   int r, c, n;
   for(r=0; r<rowA; r++){
     for(c=0; c<colB; c++){
       t_matrixfloat sum=0.f;
       for(n=0;n<colArowB; n++)
         sum+=A[colArowB*r+n]*B[colB*n+c];
+      result[colB*r+c]=sum;
     }
   }
   return result;
diff --git a/src/mtx_transpose.c b/src/mtx_transpose.c
index 1fe2eab..ecc7722 100644
--- a/src/mtx_transpose.c
+++ b/src/mtx_transpose.c
@@ -18,7 +18,9 @@ static t_class *mtx_transpose_class;
 
 t_matrixfloat*mtx_doTranspose(t_matrixfloat*transposee, int row, int col){
   int r,c;
-  t_matrixfloat*transposed=(t_matrixfloat*)getbytes(sizeof(t_matrixfloat)*row*col);
+  t_matrixfloat*transposed=0;
+  if(!transposee||!row||!col)return 0;
+  transposed=(t_matrixfloat*)getbytes(sizeof(t_matrixfloat)*row*col);
   r=row;
   while(r--){
     c=col;