diff options
Diffstat (limited to 'src/plugins/ioam/lib-pot')
| -rw-r--r-- | src/plugins/ioam/lib-pot/math64.h | 31 |
1 files changed, 13 insertions, 18 deletions
diff --git a/src/plugins/ioam/lib-pot/math64.h b/src/plugins/ioam/lib-pot/math64.h index 4c608a37de4..2084c25fa58 100644 --- a/src/plugins/ioam/lib-pot/math64.h +++ b/src/plugins/ioam/lib-pot/math64.h @@ -51,23 +51,23 @@ static inline void mul64by64(u64 a, u64 b, u64 * hi, u64 * lo) static inline u64 mod128by64(u64 x, u64 y, u64 m, double di) { - u64 q1, q2, q; - u64 p1, p0; - double dq; + u64 q1, q2; + u64 p1, p0; + double dq; - /* calculate quotient first pass 53 bits */ - dq = (TWO64 * (double)x + (double)y) * di; + /* calculate quotient first pass 53 bits */ + dq = (TWO64 * (double) x + (double) y) * di; - if (dq >= TWO64) - q1 = 0xfffffffffffff800L; - else - q1 = dq; + if (dq >= TWO64) + q1 = 0xfffffffffffff800L; + else + q1 = dq; - /* q1 * m to compare the product to the dividend. */ - mul64by64(q1, m, &p1, &p0); + /* q1 * m to compare the product to the dividend. */ + mul64by64 (q1, m, &p1, &p0); - /* Adjust quotient. is it > actual result: */ - if (x < p1 || (x == p1 && y < p0)) + /* Adjust quotient. is it > actual result: */ + if (x < p1 || (x == p1 && y < p0)) { /* q1 > quotient. calculate abs remainder */ x = p1 - (x + (p0 < y)); @@ -77,7 +77,6 @@ static inline u64 mod128by64(u64 x, u64 y, u64 m, double di) q2 = (u64) ((TWO64 * (double)x + (double)y) * di); mul64by64(q2, m, &p1, &p0); - q = q1 - q2; if (x < p1 || (x == p1 && y <= p0)) { y = p0 - y; @@ -86,7 +85,6 @@ static inline u64 mod128by64(u64 x, u64 y, u64 m, double di) { y = p0 - y; y += m; - q--; } } else @@ -97,12 +95,10 @@ static inline u64 mod128by64(u64 x, u64 y, u64 m, double di) q2 = (u64) ((TWO64 * (double)x + (double)y) * di); mul64by64(q2, m, &p1, &p0); - q = q1 + q2; if (x < p1 || (x == p1 && y < p0)) { y = y - p0; y += m; - q--; } else { @@ -110,7 +106,6 @@ static inline u64 mod128by64(u64 x, u64 y, u64 m, double di) if (y >= m) { y -= m; - q++; } } } |