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Category talk:Wren-big: Difference between revisions

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Category talk:Wren-big (view source)

Revision as of 14:02, 19 August 2021

80 bytes removed ,  2 years ago
→‎Source code: Improved BigInt.isqrt method - up to 3x faster than before.
(→‎Source code: Bug fix.)
(→‎Source code: Improved BigInt.isqrt method - up to 3x faster than before.)
Line 1,015:
// r.square <= this. Throws an error if the current instance is negative.
isqrt {
if (this.isNegative) Fiber.abort("Cannot take the square root of a negative number.")
varif q(isSmall) =return BigInt.onesmall_(toSmall.sqrt.floor)
whilevar (qone <= this) q = q * 4BigInt.one
var za = this.copyone << ((bitLength + one) >> one)
varwhile r(true) = BigInt.zero{
while var b = (qthis/a >+ BigInt.onea) {>> one
qif (b >= qa) /return 4a
var ta = z - r - qb
r = r / 2
if (t >= 0) {
z = t
r = r + q
}
}
} return r
}
// Returns a list containing the quotient and the remainder after dividing the current instance
PureFox
9,482

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