&v.points[i]))) } } // Selectors. // Set dest to x*Q, where -8 <= x <= 8, in constant time. func (v *projLookupTable) SelectInto(dest *projCached, x int8) { // Compute xabs = |x| xmask := x >> 7 xabs := uint8((x + xmask) ^ xmask) dest.Zero() for j := 1; j <= 8; j++ { // Set dest = j*Q if |x| = j cond := constanttime.ByteEq(xabs, uint8(j)) dest.Select(&v.points[j-1], dest, cond) } // Now dest = |x|*Q, conditionally negate to get x*Q dest.CondNeg(int(xmask & 1)) } // Set dest to x*Q, where -8 <= x...

pkg math, const SmallestNonzeroFloat64 ideal-float
pkg math, const Sqrt2 ideal-float
pkg math, const SqrtE ideal-float
pkg math, const SqrtPhi ideal-float
pkg math, const SqrtPi ideal-float
pkg math, func Abs(float64) float64
pkg math, func Acos(float64) float64
pkg math, func Acosh(float64) float64
pkg math, func Asin(float64) float64
pkg math, func Asinh(float64) float64
pkg math, func Atan(float64) float64