2 #include "gromacs/utility/real.h"
4 #include "../gmx_lapack.h"
5 #include "lapack_limits.h"
10 F77_FUNC(slagtf,SLAGTF)(int *n,
23 float tl, eps, piv1, piv2, temp, mult, scale1, scale2;
44 if (fabs(a[1])<GMX_FLOAT_MIN) {
52 tl = (*tol>eps) ? *tol : eps;
53 scale1 = fabs(a[1]) + fabs(b[1]);
55 for (k = 1; k <= i__1; ++k) {
57 scale2 = fabs(c__[k]) + fabs(a[k + 1]);
59 scale2 += fabs(b[k + 1]);
61 if (fabs(a[k])<GMX_FLOAT_MIN) {
64 piv1 = fabs(a[k]) / scale1;
66 if (fabs(c__[k])<GMX_FLOAT_MIN) {
74 piv2 = fabs(c__[k]) / scale2;
79 a[k + 1] -= c__[k] * b[k];
88 a[k + 1] = b[k] - mult * temp;
91 b[k + 1] = -mult * d__[k];
97 if (((piv1>piv2) ? piv1 : piv2) <= tl && in[*n] == 0) {
101 if (fabs(a[*n]) <= scale1 * tl && in[*n] == 0) {