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-rw-r--r--src/nad_cvt.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/nad_cvt.c b/src/nad_cvt.c
index f6519e7e..902aa9fa 100644
--- a/src/nad_cvt.c
+++ b/src/nad_cvt.c
@@ -15,7 +15,7 @@ nad_cvt(LP in, int inverse, struct CTABLE *ct) {
tb = in;
tb.lam -= ct->ll.lam;
tb.phi -= ct->ll.phi;
- tb.lam = adjlon(tb.lam);
+ tb.lam = adjlon(tb.lam - PI) + PI;
t = nad_intr(tb, ct);
if (inverse) {
LP del, dif;