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vendor: Update everything

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GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/4620
This commit is contained in:
Jakob Borg
2017-12-29 11:38:00 +00:00
parent 1296a22069
commit c24bf7ea55
1070 changed files with 294926 additions and 488191 deletions
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40
vendor/github.com/remyoudompheng/bigfft/fermat.go generated vendored
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@@ -42,7 +42,6 @@ func (z fermat) norm() {
// Shift computes (x << k) mod (2^n+1).
func (z fermat) Shift(x fermat, k int) {
if len(z) != len(x) {
println(len(z), len(x))
panic("len(z) != len(x) in Shift")
}
n := len(x) - 1
@@ -84,7 +83,9 @@ func (z fermat) Shift(x fermat, k int) {
z[n] -= b
}
// Add back 1.
if z[0] < ^big.Word(0) {
if z[n] > 0 {
z[n]--
} else if z[0] < ^big.Word(0) {
z[0]++
} else {
addVW(z, z, 1)
@@ -141,6 +142,9 @@ func (z fermat) Sub(x, y fermat) fermat {
}
func (z fermat) Mul(x, y fermat) fermat {
if len(x) != len(y) {
panic("Mul: len(x) != len(y)")
}
n := len(x) - 1
if n < 30 {
z = z[:2*n+2]
@@ -166,16 +170,30 @@ func (z fermat) Mul(x, y fermat) fermat {
if len(z) > 2*n+1 {
panic("len(z) > 2n+1")
}
i := len(z) - (n + 1) // i <= n
c := subVV(z[1:i+1], z[1:i+1], z[n+1:])
z = z[:n+1]
z[n]++ // Add -1.
subVW(z[i+1:], z[i+1:], c)
// Add 1.
if z[n] == 1 {
z[n] = 0
// We now have
// z = z[:n] + 1<<(n*W) * z[n:2n+1]
// which normalizes to:
// z = z[:n] - z[n:2n] + z[2n]
c1 := big.Word(0)
if len(z) > 2*n {
c1 = addVW(z[:n], z[:n], z[2*n])
}
c2 := big.Word(0)
if len(z) >= 2*n {
c2 = subVV(z[:n], z[:n], z[n:2*n])
} else {
addVW(z, z, 1)
m := len(z) - n
c2 = subVV(z[:m], z[:m], z[n:])
c2 = subVW(z[m:n], z[m:n], c2)
}
// Restore carries.
// Substracting z[n] -= c2 is the same
// as z[0] += c2
z = z[:n+1]
z[n] = c1
c := addVW(z, z, c2)
if c != 0 {
panic("impossible")
}
z.norm()
return z