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49 lines
956 B
49 lines
956 B
/*
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* Copyright(C) 1999-2020 National Technology & Engineering Solutions
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* of Sandia, LLC (NTESS). Under the terms of Contract DE-NA0003525 with
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* NTESS, the U.S. Government retains certain rights in this software.
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*
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* See packages/seacas/LICENSE for details
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*/
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/* Orthogonalize a double vector to all one's */
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void orthog1(double *x, int beg, int end)
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{
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int i;
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double *pntr;
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double sum;
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int len;
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len = end - beg + 1;
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sum = 0.0;
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pntr = x + beg;
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for (i = len; i; i--) {
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sum += *pntr++;
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}
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sum /= len;
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pntr = x + beg;
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for (i = len; i; i--) {
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*pntr++ -= sum;
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}
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}
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/* Orthogonalize a float vector to all one's */
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void orthog1_float(float *x, int beg, int end)
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{
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int i;
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float *pntr;
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float sum;
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int len;
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len = end - beg + 1;
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sum = 0.0;
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pntr = x + beg;
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for (i = len; i; i--) {
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sum += *pntr++;
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}
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sum /= len;
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pntr = x + beg;
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for (i = len; i; i--) {
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*pntr++ -= sum;
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}
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}
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