#ifndef SOME_C_CODE_H #define SOME_C_CODE_H #include <stdint.h> #include <stddef.h> extern void relatedCode(size_t aNumber); extern uint64_t multiplyU64byU32(uint64_t*a, uint32_t*b); extern uint64_t multiplyAndAdd(uint32_t*arr, size_t arrlen, uint32_t mult); extern uint64_t fac(uint64_t n); #endif