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fix overflow issue due to larger oracle decimals

This commit is contained in:
Maximilian Schneider 2022-08-17 16:25:21 +02:00
parent a96083d1f9
commit 663d909d38
1 changed files with 8 additions and 5 deletions
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13
program/src/processor.rs
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@ -1718,15 +1718,18 @@ pub fn get_prices(
) -> MangoResult<[U64F64; NUM_TOKENS]> {
let mut prices = [ZERO_U64F64; NUM_TOKENS];
prices[NUM_MARKETS] = ONE_U64F64; // quote currency is 1
let quote_decimals: u8 = mango_group.mint_decimals[NUM_MARKETS];
let quote_decimals: i16 = mango_group.mint_decimals[NUM_MARKETS].into();
for i in 0..NUM_MARKETS {
check_eq_default!(&mango_group.oracles[i], oracle_accs[i].key)?;
let base_adj = U64F64::from_num(10u64.pow(mango_group.mint_decimals[i] as u32));
let quote_adj = U64F64::from_num(
10u64.pow(quote_decimals.checked_sub(mango_group.oracle_decimals[i]).unwrap() as u32)
);
let base_adj = U64F64::from_num(10u64.checked_pow(mango_group.mint_decimals[i] as u32).unwrap());
let quote_dec_adj = quote_decimals.checked_sub(mango_group.oracle_decimals[i].into()).unwrap();
let quote_adj = if quote_dec_adj >= 0 {
U64F64::from_num(10u64.checked_pow(quote_dec_adj as u32).unwrap())
} else {
U64F64::ONE.checked_div(U64F64::from_num(10u64.checked_pow(-quote_dec_adj as u32).unwrap())).unwrap()
};
// determine oracle type
let borrowed = oracle_accs[i].data.borrow();