1 files changed, 0 insertions, 16 deletions
diff --git a/src/crypto/shen_ed25519_ref/ref10/fe_isnegative.c b/src/crypto/shen_ed25519_ref/ref10/fe_isnegative.c
deleted file mode 100644
index 3b2c8b8d5..000000000
--- a/src/crypto/shen_ed25519_ref/ref10/fe_isnegative.c
+++ /dev/null
@@ -1,16 +0,0 @@
-#include "fe.h"
-
-/*
-return 1 if f is in {1,3,5,...,q-2}
-return 0 if f is in {0,2,4,...,q-1}
-
-Preconditions:
-   |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
-*/
-
-int fe_isnegative(const fe f)
-{
-  unsigned char s[32];
-  fe_tobytes(s,f);
-  return s[0] & 1;
-}