Defensive break in binary search

2022-04-05 15:16:51 -05:00 · 2022-04-05 15:16:51 -05:00 · feb276ccfa
commit feb276ccfa
parent f749eb1df8
1 changed files with 2 additions and 0 deletions
--- a/common/calculate-cpmm.ts
+++ b/common/calculate-cpmm.ts
@ -151,6 +151,8 @@ function calculateCpmmShareValue(
  let kGuess = 0
  while (Math.abs(k - kGuess) > 0.00000000001) {
    mid = lowAmount + (highAmount - lowAmount) / 2
+    if (mid === lowAmount || mid === highAmount) break
+
    kGuess = sellSharesK(pool.YES, pool.NO, p, shares, outcome, mid)
    if (kGuess < k) {
      highAmount = mid