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Make OraclePrice deterministic

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jl777
2018-09-05 22:41:52 -11:00
parent 4df2623392
commit 4b6317e5a3
1 changed files with 14 additions and 1 deletions
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15
src/cc/oracles.cpp
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@@ -384,12 +384,25 @@ int64_t _correlate_price(int64_t *prices,int32_t n,int64_t price)
else return(price); else return(price);
} }
int _increasing_uint64(const void *a,const void *b)
{
#define uint64_a (*(uint64_t *)a)
#define uint64_b (*(uint64_t *)b)
if ( uint64_b > uint64_a )
return(-1);
else if ( uint64_b < uint64_a )
return(1);
return(0);
#undef uint64_a
#undef uint64_b
}
int64_t correlate_price(int32_t height,int64_t *prices,int32_t n) int64_t correlate_price(int32_t height,int64_t *prices,int32_t n)
{ {
int32_t i,j; int64_t price = 0; int32_t i,j; int64_t price = 0;
if ( n == 1 ) if ( n == 1 )
return(prices[0]); return(prices[0]);
// deterministic sort, like heapsort heapsort(prices,n,sizeof(*prices),_increasing_uint64);
for (i=0; i<n; i++) for (i=0; i<n; i++)
{ {
j = (height + i) % n; j = (height + i) % n;