20 lines
501 B
TypeScript
20 lines
501 B
TypeScript
export const PHANTOM_ANTE = 200
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export const calcStartPool = (initialProbInt: number, ante?: number) => {
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const p = initialProbInt / 100.0
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const totalAnte = PHANTOM_ANTE + (ante || 0)
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const poolYes =
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p === 0.5
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? p * totalAnte
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: -(totalAnte * (-p + Math.sqrt((-1 + p) * -p))) / (-1 + 2 * p)
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const poolNo = totalAnte - poolYes
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const f = PHANTOM_ANTE / totalAnte
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const startYes = f * poolYes
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const startNo = f * poolNo
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return { startYes, startNo, poolYes, poolNo }
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}
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