fix a few typos in interp2d()

1 files changed, 3 insertions, 3 deletions

diff --git a/src/misc.c b/src/misc.c
index 56be84f..e6939f7 100644
--- a/src/misc.c
+++ b/src/misc.c
@@ -419,13 +419,13 @@ double interp2d(double x, double y, double *xp, double *yp, double *zp, size_t n
     double q11, q12, q21, q22;
     double idx, idy;
 
-    if (x <= xp[0]) {
+    if (x < xp[0]) {
         fprintf(stderr, "x < xp[0]!\n");
         exit(1);
     }
 
-    if (y <= yp[0]) {
-        fprintf(stderr, "y < xp[0]!\n");
+    if (y < yp[0]) {
+        fprintf(stderr, "y < yp[0]!\n");
         exit(1);
     }