https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Indices-in-IPIV-array-for-LU-related-functions/m-p/950538#M15191 <P>Hello,</P> <P>All LU (and also QR with column pivoting) related LAPACK functions has as an argument an array IPIV that stores the indices of row (columns for QR) permutations. In the MKL LAPACKE C interface, are the indices of this array 0-based or 1-based, as in Fortran?, i.e., an index for the first row , is stored as 0 or as 1?</P> <P>Thanks</P> Mon, 06 Jan 2014 18:59:55 GMT José_Luis_G_ 2014-01-06T18:59:55Z https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Indices-in-IPIV-array-for-LU-related-functions/m-p/950538#M15191 <P>Hello,</P> <P>All LU (and also QR with column pivoting) related LAPACK functions has as an argument an array IPIV that stores the indices of row (columns for QR) permutations. In the MKL LAPACKE C interface, are the indices of this array 0-based or 1-based, as in Fortran?, i.e., an index for the first row , is stored as 0 or as 1?</P> <P>Thanks</P> Mon, 06 Jan 2014 18:59:55 GMT https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Indices-in-IPIV-array-for-LU-related-functions/m-p/950538#M15191 José_Luis_G_ 2014-01-06T18:59:55Z https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Indices-in-IPIV-array-for-LU-related-functions/m-p/950539#M15192 <P>One-based indices still so that the routines are compatible.</P> Mon, 06 Jan 2014 19:07:17 GMT https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Indices-in-IPIV-array-for-LU-related-functions/m-p/950539#M15192 Gregory_H_Intel 2014-01-06T19:07:17Z