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clean up portable 128-bit multiply

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Javier Smooth
2015-07-27 15:47:26 -07:00
parent 25990016d5
commit b5d19efd6f
2 changed files with 12 additions and 15 deletions
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src/cryptonote_core/difficulty.cpp
-15
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@@ -45,25 +45,10 @@ namespace cryptonote {
using std::uint64_t;
using std::vector;
#if defined(_MSC_VER)
#include <windows.h>
#include <winnt.h>
static inline void mul(uint64_t a, uint64_t b, uint64_t &low, uint64_t &high) {
low = mul128(a, b, &high);
}
#else
static inline void mul(uint64_t a, uint64_t b, uint64_t &low, uint64_t &high) {
typedef unsigned __int128 uint128_t;
uint128_t res = (uint128_t) a * (uint128_t) b;
low = (uint64_t) res;
high = (uint64_t) (res >> 64);
}
#endif
static inline bool cadd(uint64_t a, uint64_t b) {
return a + b < a;
}