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58 lines
1.2 KiB
C
58 lines
1.2 KiB
C
/* Unless compiled with -DNO_OVERWRITE, this variant of s_cat allows the
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* target of a concatenation to appear on its right-hand side (contrary
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* to the Fortran 77 Standard, but in accordance with Fortran 90).
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*/
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#include "clapack.h"
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#include "stdio.h"
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#undef abs
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#undef min
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#undef max
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#include "stdlib.h"
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#include "string.h"
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void s_cat(char *lp, char *rpp[], ftnint rnp[], ftnint *np, ftnlen ll)
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{
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ftnlen i, nc;
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char *rp;
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ftnlen n = *np;
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ftnlen L, m;
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char *lp0, *lp1;
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lp0 = 0;
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lp1 = lp;
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L = ll;
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i = 0;
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while(i < n) {
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rp = rpp[i];
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m = rnp[i++];
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if (rp >= lp1 || rp + m <= lp) {
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if ((L -= m) <= 0) {
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n = i;
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break;
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}
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lp1 += m;
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continue;
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}
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lp0 = lp;
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lp = lp1 = F77_aloc(L = ll, "s_cat");
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break;
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}
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lp1 = lp;
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for(i = 0 ; i < n ; ++i) {
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nc = ll;
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if(rnp[i] < nc)
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nc = rnp[i];
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ll -= nc;
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rp = rpp[i];
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while(--nc >= 0)
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*lp++ = *rp++;
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}
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while(--ll >= 0)
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*lp++ = ' ';
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if (lp0) {
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memcpy(lp0, lp1, L);
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free(lp1);
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}
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}
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