comparison ext/clapack/src/s_cat.c @ 430:335af74a25b6

Merge from branch clapack-included

+/* Unless compiled with -DNO_OVERWRITE, this variant of s_cat allows the
+ * target of a concatenation to appear on its right-hand side (contrary
+ * to the Fortran 77 Standard, but in accordance with Fortran 90).
+ */
+
+#include "f2c.h"
+#ifndef NO_OVERWRITE
+#include "stdio.h"
+#undef abs
+#ifdef KR_headers
+ extern char *F77_aloc();
+ extern void free();
+ extern void exit_();
+#else
+#undef min
+#undef max
+#include "stdlib.h"
+extern
+#ifdef __cplusplus
+	"C"
+#endif
+	char *F77_aloc(ftnlen, const char*);
+#endif
+#include "string.h"
+#endif /* NO_OVERWRITE */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+ VOID
+#ifdef KR_headers
+s_cat(lp, rpp, rnp, np, ll) char *lp, *rpp[]; ftnint rnp[], *np; ftnlen ll;
+#else
+s_cat(char *lp, char *rpp[], ftnint rnp[], ftnint *np, ftnlen ll)
+#endif
+{
+	ftnlen i, nc;
+	char *rp;
+	ftnlen n = *np;
+#ifndef NO_OVERWRITE
+	ftnlen L, m;
+	char *lp0, *lp1;
+
+	lp0 = 0;
+	lp1 = lp;
+	L = ll;
+	i = 0;
+	while(i < n) {
+		rp = rpp[i];
+		m = rnp[i++];
+		if (rp >= lp1 || rp + m <= lp) {
+			if ((L -= m) <= 0) {
+				n = i;
+				break;
+				}
+			lp1 += m;
+			continue;
+			}
+		lp0 = lp;
+		lp = lp1 = F77_aloc(L = ll, "s_cat");
+		break;
+		}
+	lp1 = lp;
+#endif /* NO_OVERWRITE */
+	for(i = 0 ; i < n ; ++i) {
+		nc = ll;
+		if(rnp[i] < nc)
+			nc = rnp[i];
+		ll -= nc;
+		rp = rpp[i];
+		while(--nc >= 0)
+			*lp++ = *rp++;
+		}
+	while(--ll >= 0)
+		*lp++ = ' ';
+#ifndef NO_OVERWRITE
+	if (lp0) {
+		memcpy(lp0, lp1, L);
+		free(lp1);
+		}
+#endif
+	}
+#ifdef __cplusplus
+}
+#endif