Files
lammps/lib/linalg/iladlr.cpp

32 lines
717 B
C++

#ifdef __cplusplus
extern "C" {
#endif
#include "lmp_f2c.h"
integer iladlr_(integer *m, integer *n, doublereal *a, integer *lda)
{
integer a_dim1, a_offset, ret_val, i__1;
integer i__, j;
a_dim1 = *lda;
a_offset = 1 + a_dim1;
a -= a_offset;
if (*m == 0) {
ret_val = *m;
} else if (a[*m + a_dim1] != 0. || a[*m + *n * a_dim1] != 0.) {
ret_val = *m;
} else {
ret_val = 0;
i__1 = *n;
for (j = 1; j <= i__1; ++j) {
i__ = *m;
while (a[max(i__, 1) + j * a_dim1] == 0. && i__ >= 1) {
--i__;
}
ret_val = max(ret_val, i__);
}
}
return ret_val;
}
#ifdef __cplusplus
}
#endif