1 Reply Latest reply on Jan 19, 2011 9:23 AM by eS-Tea

    LIBRARY REFERENCE: parameter description for function prototypes

    oscarvarto
      Is there a LIBRARY REFERENCE MANUAL besides acml.pdf?

      I am looking for something like Intel® Math Kernel Library Reference Manual

      http://software.intel.com/sites/products/documentation/hpc/composerxe/en-us/mklxe/mkl_manual_win_mac/index.htm

      ---------

      Is there any documentation that explains the valid values and meaning of the parameters in ACML functions?

      For example, in the file dgesdd_c_example.c available in

                       /opt/acml4.4.0/gfortran64_mp/examples

      you can find the next call to dgesdd:

       /* Compute singular value decomposition of A */
        dgesdd('n',m,n,a,lda,s,u,1,vt,1,&info);

       

      The header file acml.h contains the prototype:

      extern void dgesdd(char jobz, int m, int n, double *a, int lda, double *s, double *u, int ldu, double *vt, int ldvt, int *info);

      but, taking jobz as an example:

      • what is jobz for?
      • what values can it take? what do they mean?

      Thanks.