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36 #include <types/simple.h>
38 #include "gmx_lapack.h"
39 #include "lapack_limits.h"
44 F77_FUNC(slagtf,SLAGTF)(int *n,
57 float tl, eps, piv1, piv2, temp, mult, scale1, scale2;
78 if (fabs(a[1])<GMX_FLOAT_MIN) {
86 tl = (*tol>eps) ? *tol : eps;
87 scale1 = fabs(a[1]) + fabs(b[1]);
89 for (k = 1; k <= i__1; ++k) {
91 scale2 = fabs(c__[k]) + fabs(a[k + 1]);
93 scale2 += fabs(b[k + 1]);
95 if (fabs(a[k])<GMX_FLOAT_MIN) {
98 piv1 = fabs(a[k]) / scale1;
100 if (fabs(c__[k])<GMX_FLOAT_MIN) {
108 piv2 = fabs(c__[k]) / scale2;
113 a[k + 1] -= c__[k] * b[k];
119 mult = a[k] / c__[k];
122 a[k + 1] = b[k] - mult * temp;
125 b[k + 1] = -mult * d__[k];
131 if (((piv1>piv2) ? piv1 : piv2) <= tl && in[*n] == 0) {
135 if (fabs(a[*n]) <= scale1 * tl && in[*n] == 0) {