Function affineCoordinates [src]

Return affine coordinates.

Prototype

pub fn affineCoordinates(p: P256) AffineCoordinates

Parameters

p: P256

Source

  pub fn affineCoordinates(p: P256) AffineCoordinates {
    const affine_0 = @intFromBool(p.x.equivalent(AffineCoordinates.identityElement.x)) & (@intFromBool(p.y.isZero()) | @intFromBool(p.y.equivalent(AffineCoordinates.identityElement.y)));
    const is_identity = @intFromBool(p.z.isZero()) | affine_0;
    const zinv = p.z.invert();
    var ret = AffineCoordinates{
        .x = p.x.mul(zinv),
        .y = p.y.mul(zinv),
    };
    ret.cMov(AffineCoordinates.identityElement, is_identity);
    return ret;
}  