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-rw-r--r--src/pj_ell_set.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/src/pj_ell_set.c b/src/pj_ell_set.c
index 6c89ea0d..e2d2750c 100644
--- a/src/pj_ell_set.c
+++ b/src/pj_ell_set.c
@@ -258,9 +258,8 @@ static int ellps_shape (PJ *P) {
P->f = pj_atof (pj_param_value (par));
if (HUGE_VAL==P->f)
return proj_errno_set (P, PJD_ERR_INVALID_ARG);
- if (0==P->f)
- return proj_errno_set (P, PJD_ERR_INVALID_ARG);
- P->rf = 1 / P->f;
+
+ P->rf = P->f != 0.0 ? 1.0/P->f: HUGE_VAL;
P->es = 2*P->f - P->f*P->f;
break;