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refactor cast of Fp2T

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2merge^2
MITSUNARI Shigeo 4 years ago
parent 125451649c
commit e25fc2fa62
1 changed files with 21 additions and 19 deletions
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  1. 40
      include/mcl/fp_tower.hpp

40
include/mcl/fp_tower.hpp
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@ -540,38 +540,40 @@ public:
} }
#endif #endif
private: private:
static Fp2T& cast(Unit *x) { return *reinterpret_cast<Fp2T*>(x); }
static const Fp2T& cast(const Unit *x) { return *reinterpret_cast<const Fp2T*>(x); }
/* /*
default Fp2T operator default Fp2T operator
Fp2T = Fp[i]/(i^2 + 1) Fp2T = Fp[i]/(i^2 + 1)
*/ */
static void addA(Unit *pz, const Unit *px, const Unit *py) static void addA(Unit *pz, const Unit *px, const Unit *py)
{ {
Fp2T& z = *reinterpret_cast<Fp2T*>(pz); Fp2T& z = cast(pz);
const Fp2T& x = *reinterpret_cast<const Fp2T*>(px); const Fp2T& x = cast(px);
const Fp2T& y = *reinterpret_cast<const Fp2T*>(py); const Fp2T& y = cast(py);
Fp::add(z.a, x.a, y.a); Fp::add(z.a, x.a, y.a);
Fp::add(z.b, x.b, y.b); Fp::add(z.b, x.b, y.b);
} }
static void subA(Unit *pz, const Unit *px, const Unit *py) static void subA(Unit *pz, const Unit *px, const Unit *py)
{ {
Fp2T& z = *reinterpret_cast<Fp2T*>(pz); Fp2T& z = cast(pz);
const Fp2T& x = *reinterpret_cast<const Fp2T*>(px); const Fp2T& x = cast(px);
const Fp2T& y = *reinterpret_cast<const Fp2T*>(py); const Fp2T& y = cast(py);
Fp::sub(z.a, x.a, y.a); Fp::sub(z.a, x.a, y.a);
Fp::sub(z.b, x.b, y.b); Fp::sub(z.b, x.b, y.b);
} }
static void negA(Unit *py, const Unit *px) static void negA(Unit *py, const Unit *px)
{ {
Fp2T& y = *reinterpret_cast<Fp2T*>(py); Fp2T& y = cast(py);
const Fp2T& x = *reinterpret_cast<const Fp2T*>(px); const Fp2T& x = cast(px);
Fp::neg(y.a, x.a); Fp::neg(y.a, x.a);
Fp::neg(y.b, x.b); Fp::neg(y.b, x.b);
} }
static void mulA(Unit *pz, const Unit *px, const Unit *py) static void mulA(Unit *pz, const Unit *px, const Unit *py)
{ {
Fp2T& z = *reinterpret_cast<Fp2T*>(pz); Fp2T& z = cast(pz);
const Fp2T& x = *reinterpret_cast<const Fp2T*>(px); const Fp2T& x = cast(px);
const Fp2T& y = *reinterpret_cast<const Fp2T*>(py); const Fp2T& y = cast(py);
Fp2Dbl d; Fp2Dbl d;
Fp2Dbl::mulPre(d, x, y); Fp2Dbl::mulPre(d, x, y);
FpDbl::mod(z.a, d.a); FpDbl::mod(z.a, d.a);
@ -579,8 +581,8 @@ private:
} }
static void mul2A(Unit *py, const Unit *px) static void mul2A(Unit *py, const Unit *px)
{ {
Fp2T& y = *reinterpret_cast<Fp2T*>(py); Fp2T& y = cast(py);
const Fp2T& x = *reinterpret_cast<const Fp2T*>(px); const Fp2T& x = cast(px);
Fp::mul2(y.a, x.a); Fp::mul2(y.a, x.a);
Fp::mul2(y.b, x.b); Fp::mul2(y.b, x.b);
} }
@ -590,8 +592,8 @@ private:
*/ */
static void sqrA(Unit *py, const Unit *px) static void sqrA(Unit *py, const Unit *px)
{ {
Fp2T& y = *reinterpret_cast<Fp2T*>(py); Fp2T& y = cast(py);
const Fp2T& x = *reinterpret_cast<const Fp2T*>(px); const Fp2T& x = cast(px);
const Fp& a = x.a; const Fp& a = x.a;
const Fp& b = x.b; const Fp& b = x.b;
#if 1 // faster than using FpDbl #if 1 // faster than using FpDbl
@ -622,8 +624,8 @@ private:
*/ */
static void fp2_mul_xiA(Unit *py, const Unit *px) static void fp2_mul_xiA(Unit *py, const Unit *px)
{ {
Fp2T& y = *reinterpret_cast<Fp2T*>(py); Fp2T& y = cast(py);
const Fp2T& x = *reinterpret_cast<const Fp2T*>(px); const Fp2T& x = cast(px);
const Fp& a = x.a; const Fp& a = x.a;
const Fp& b = x.b; const Fp& b = x.b;
Fp t; Fp t;
@ -639,8 +641,8 @@ private:
*/ */
static void fp2_mul_xi_1_1iA(Unit *py, const Unit *px) static void fp2_mul_xi_1_1iA(Unit *py, const Unit *px)
{ {
Fp2T& y = *reinterpret_cast<Fp2T*>(py); Fp2T& y = cast(py);
const Fp2T& x = *reinterpret_cast<const Fp2T*>(px); const Fp2T& x = cast(px);
const Fp& a = x.a; const Fp& a = x.a;
const Fp& b = x.b; const Fp& b = x.b;
Fp t; Fp t;

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