This example reads a frontal matrix from a single file from disk, and compress it using entry-valuation or matvec-based APIs.
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This example reads a frontal matrix from a single file from disk, and compress it using entry-valuation or matvec-based APIs.
Note that instead of the use of precision dependent subroutine/module/type names "d_", one can also use the following
#define DAT 1
#include "dButterflyPACK_config.fi"
which will macro replace precision-independent subroutine/module/type names "X" with "d_X" defined in SRC_DOUBLE with double precision