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mango-v4
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Fix oracle price decimal usage 

Signed-off-by: microwavedcola1 <microwavedcola@gmail.com>
This commit is contained in:
microwavedcola1 2022-06-02 19:16:30 +02:00
parent 242d39295a
commit 47bccfeec8
1 changed files with 9 additions and 5 deletions
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14
programs/mango-v4/src/state/oracle.rs
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@ -9,7 +9,7 @@ use crate::checked_math as cm;
use crate::error::MangoError;
use crate::util::LoadZeroCopy;
pub const QUOTE_DECIMALS: u32 = 6;
pub const QUOTE_DECIMALS: i32 = 6;
#[derive(PartialEq)]
pub enum OracleType {
@ -47,13 +47,17 @@ pub fn oracle_price(acc_info: &AccountInfo, base_token_decimals: u8) -> Result<I
OracleType::Pyth => {
let price_struct = pyth_sdk_solana::load_price(data).unwrap();
let price = I80F48::from_num(price_struct.price);
let decimals = (price_struct.expo as u32)
let decimals = (price_struct.expo as i32)
.checked_add(QUOTE_DECIMALS)
.unwrap()
.checked_sub(base_token_decimals as u32)
.checked_sub(base_token_decimals as i32)
.unwrap();
let decimal_adj = I80F48::from_num(10_u32.pow(decimals));
cm!(price * decimal_adj)
let decimal_adj = I80F48::from_num(10_u32.pow(decimals.abs() as u32));
if decimals < 0 {
cm!(price / decimal_adj)
} else {
cm!(price * decimal_adj)
}
}
})
}