update fit to allow t0 to be negative

1 files changed, 3 insertions, 3 deletions

diff --git a/src/fit.c b/src/fit.c
index 46a14df..056f6b0 100644
--- a/src/fit.c
+++ b/src/fit.c
@@ -5288,7 +5288,7 @@ int fit_event2(event *ev, double *xopt, double *fmin, int *id, size_t n, double
     /* Guess the position and t0 of the event using the QUAD fitter. */
     status = quad(ev,pos,&t0,10000);
 
-    if (status || t0 < 0 || t0 > GTVALID || NORM(pos) > PSUP_RADIUS) {
+    if (status || t0 > GTVALID || NORM(pos) > PSUP_RADIUS) {
         /* If the QUAD fitter fails or returns something outside the PSUP or
          * with an invalid time we just assume it's at the center. */
         fprintf(stderr, "quad returned pos = %.2f, %.2f, %.2f t0 = %.2f. Assuming vertex is at the center!\n",
@@ -5318,7 +5318,7 @@ int fit_event2(event *ev, double *xopt, double *fmin, int *id, size_t n, double
     lb[0] = -1000.0;
     lb[1] = -1000.0;
     lb[2] = -1000.0;
-    lb[3] = 0.0;
+    lb[3] = -100.0;
 
     /* Set the upper bound for the parameters which don't change during the
      * fast minimization. */
@@ -5455,7 +5455,7 @@ int fit_event2(event *ev, double *xopt, double *fmin, int *id, size_t n, double
     lb[0] = -1000.0;
     lb[1] = -1000.0;
     lb[2] = -1000.0;
-    lb[3] = 0.0;
+    lb[3] = -100.0;
 
     ub[0] = +1000.0;
     ub[1] = +1000.0;