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-rw-r--r--source/c4.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/source/c4.h b/source/c4.h
index 590ead0..7ab3964 100644
--- a/source/c4.h
+++ b/source/c4.h
@@ -23,9 +23,9 @@ extern int16_t C41FAngleRes;
extern int16_t C41FDist;
extern int16_t C41FDistVal;
-void C4Op1F();
-void C4Op15();
-void C4Op0D();
+extern int32_t tanval;
+
+int16_t _atan2(int16_t x, int16_t y);
extern int16_t C4CosTable[];
extern int16_t C4SinTable[];