411 REFERENCE · Wikibooks
Linear Algebra and the C Language/a01s
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
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/* Save as : vgsort.h */
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double **sort_c_mR(
double **Ab
)
{
double **T = i_RC_mR(Ab[R_SIZE][C0],Ab[C_SIZE][C0]);
int c;
for(c=C1; c<Ab[C_SIZE][C0]; c++)
c_c_withR0_mR( Ab, c,
T, Ab[R0][c]);
c_withR0_mR(T,Ab);
f_mR(T);
return(Ab);
}
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/* ------------------------------------ */
double **sort_r_mR(
double **Ab
)
{
double pivot;
int c;
int r;
int r_pivot = R1;
for ( c=C1; c<Ab[C_SIZE_A][C0]; c++)
{
r = r_pivot;
pivot = 0.;
while( (pivot<ERROR_E) && r<Ab[R_SIZE][C0] )
{
pivot = fabs( Ab[r][c] );
if(pivot>ERROR_E)
{
swapR_mR(Ab, r, r_pivot);
r_pivot++;
}
r++;
}
}
return(Ab);
}
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