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The C Users' Group Library 1994 August
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wc-cdrom-cusersgrouplibrary-1994-08.iso
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v_11_02
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1102106a
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1992-12-04
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884b
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63 lines
int select_entering(void)
{
int i,j;
enter_pos = 0;
enter_holder = 0.0;
/* determine the most neg value, if any */
for (j=1; j<COLUMNS-1; j++) {
if (table[0][j]<0) {
if (table[0][j] < enter_holder) {
enter_holder = table[0][j];
enter_pos = j;
}
}
}
/* if j has been changed from 0, then we have
an entering equation */
return(enter_pos);
}
int select_leaving(void)
{
int i,j;
float ratio[50];
leave_pos = 0;
leave_holder = 999.0;
/* determine the lowest ratio of the
positive elements */
for (i=1; i<ROWS;i++) {
if (table[i][enter_pos] > 0) {
ratio[i] =
table[i][COLUMNS-1]/table[i][enter_pos];
if (ratio[i] < leave_holder) {
leave_holder = ratio[i];
leave_pos = i;
}
}
}
return (leave_pos);
}