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-rw-r--r--src/runtime/c/gu/prime.h16
1 files changed, 16 insertions, 0 deletions
diff --git a/src/runtime/c/gu/prime.h b/src/runtime/c/gu/prime.h
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index 000000000..2ae0617f8
--- /dev/null
+++ b/src/runtime/c/gu/prime.h
@@ -0,0 +1,16 @@
+#ifndef GU_PRIME_H_
+#define GU_PRIME_H_
+
+#include <gu/defs.h>
+
+bool gu_is_prime(int i);
+
+bool gu_is_twin_prime(int i);
+
+int gu_prime_inf(int i);
+int gu_twin_prime_inf(int i);
+
+int gu_prime_sup(int i);
+int gu_twin_prime_sup(int i);
+
+#endif // GU_PRIME_H_