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Use precise A in viewers #61

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Use precise A in viewers #61

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018f012
fix: A precision in view
heswithme Jul 28, 2025
2b30dad
fix: typo
heswithme Jul 28, 2025
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11 changes: 6 additions & 5 deletions contracts/main/CurveStableSwapNGViews.vy
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,7 @@ interface StableSwapNG:
def fee() -> uint256: view
def get_dy(i: int128, j: int128, dx: uint256) -> uint256: view
def A() -> uint256: view
def A_precise() -> uint256: view
def calc_withdraw_one_coin(_token_amount: uint256, i: int128) -> uint256: view
def totalSupply() -> uint256: view
def offpeg_fee_multiplier() -> uint256: view
Expand Down Expand Up @@ -72,7 +73,7 @@ def get_dy(i: int128, j: int128, dx: uint256, pool: address) -> uint256:
xp: DynArray[uint256, MAX_COINS] = empty(DynArray[uint256, MAX_COINS])
rates, balances, xp = self._get_rates_balances_xp(pool, N_COINS)

amp: uint256 = StableSwapNG(pool).A() * A_PRECISION
amp: uint256 = StableSwapNG(pool).A_precise()
D: uint256 = self.get_D(xp, amp, N_COINS)

x: uint256 = xp[i] + (dx * rates[i] / PRECISION)
Expand Down Expand Up @@ -200,7 +201,7 @@ def get_dy_underlying(
return StableSwapNG(BASE_POOL).get_dy(base_i, base_j, dx)

# This pool is involved only when in-pool assets are used
amp: uint256 = StableSwapNG(pool).A() * A_PRECISION
amp: uint256 = StableSwapNG(pool).A_precise()
D: uint256 = self.get_D(xp, amp, N_COINS)
y: uint256 = self.get_y(meta_i, meta_j, x, xp, amp, D, N_COINS)
dy: uint256 = xp[meta_j] - y - 1
Expand Down Expand Up @@ -254,7 +255,7 @@ def calc_withdraw_one_coin(_burn_amount: uint256, i: int128, pool: address) -> u
# * Get current D
# * Solve Eqn against y_i for D - _token_amount

amp: uint256 = StableSwapNG(pool).A() * A_PRECISION
amp: uint256 = StableSwapNG(pool).A_precise()
N_COINS: uint256 = StableSwapNG(pool).N_COINS()

rates: DynArray[uint256, MAX_COINS] = empty(DynArray[uint256, MAX_COINS])
Expand Down Expand Up @@ -360,7 +361,7 @@ def _get_dx(
xp: DynArray[uint256, MAX_COINS] = empty(DynArray[uint256, MAX_COINS])
rates, balances, xp = self._get_rates_balances_xp(pool, N_COINS)

amp: uint256 = StableSwapNG(pool).A() * A_PRECISION
amp: uint256 = StableSwapNG(pool).A_precise()
D: uint256 = self.get_D(xp, amp, N_COINS)

base_fee: uint256 = StableSwapNG(pool).fee()
Expand Down Expand Up @@ -400,7 +401,7 @@ def _calc_token_amount(
n_coins: uint256,
) -> uint256:

amp: uint256 = StableSwapNG(pool).A() * A_PRECISION
amp: uint256 = StableSwapNG(pool).A_precise()

rates: DynArray[uint256, MAX_COINS] = empty(DynArray[uint256, MAX_COINS])
old_balances: DynArray[uint256, MAX_COINS] = empty(DynArray[uint256, MAX_COINS])
Expand Down