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Diffstat (limited to 'ext/ed25519-amd64-asm/fe25519_neg.c')
-rw-r--r--ext/ed25519-amd64-asm/fe25519_neg.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/ext/ed25519-amd64-asm/fe25519_neg.c b/ext/ed25519-amd64-asm/fe25519_neg.c
new file mode 100644
index 00000000..235b209d
--- /dev/null
+++ b/ext/ed25519-amd64-asm/fe25519_neg.c
@@ -0,0 +1,8 @@
+#include "fe25519.h"
+
+void fe25519_neg(fe25519 *r, const fe25519 *x)
+{
+ fe25519 t;
+ fe25519_setint(&t,0);
+ fe25519_sub(r,&t,x);
+}