Searched refs:qx (Results 1 - 10 of 10) sorted by relevance

/openjdk7/jdk/src/share/native/java/lang/fdlibm/src/
H A Dk_cos.c53 * For better accuracy when x > 0.3, let qx = |x|/4 with
54 * the last 32 bits mask off, and if x > 0.78125, let qx = 0.28125.
56 * cos(x+y) = (1-qx) - ((x*x/2-qx) - (r-x*y)).
57 * Note that 1-qx and (x*x/2-qx) is EXACT here, and the
84 double a,hz,z,r,qx; local
96 qx = 0.28125;
98 __HI(qx) = ix-0x00200000; /* x/4 */
99 __LO(qx)
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/openjdk7/jdk/src/share/native/sun/security/ec/impl/
H A Dec2_aff.c70 ec_GF2m_pt_add_aff(const mp_int *px, const mp_int *py, const mp_int *qx, argument
85 MP_CHECKOK(mp_copy(qx, rx));
91 if (ec_GF2m_pt_is_inf_aff(qx, qy) == 0) {
97 /* if px != qx, then lambda = (py+qy) / (px+qx), tempx = a + lambda^2
98 * + lambda + px + qx */
99 if (mp_cmp(px, qx) != 0) {
101 MP_CHECKOK(group->meth->field_add(px, qx, &tempx, group->meth));
112 field_add(&tempx, qx, &tempx, group->meth));
114 /* if py != qy or qx
152 ec_GF2m_pt_sub_aff(const mp_int *px, const mp_int *py, const mp_int *qx, const mp_int *qy, mp_int *rx, mp_int *ry, const ECGroup *group) argument
187 mp_int k, k3, qx, qy, sx, sy; local
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H A Decl.h73 const mp_int *py, mp_int *qx, mp_int *qy);
81 mp_int *qx, mp_int *qy);
H A Decp_aff.c76 ec_GFp_pt_add_aff(const mp_int *px, const mp_int *py, const mp_int *qx, argument
93 MP_CHECKOK(mp_copy(qx, rx));
99 if (ec_GFp_pt_is_inf_aff(qx, qy) == 0) {
105 /* if px != qx, then lambda = (py-qy) / (px-qx) */
106 if (mp_cmp(px, qx) != 0) {
108 MP_CHECKOK(group->meth->field_sub(px, qx, &tempx, group->meth));
119 /* lambda = (3qx^2+a) / (2qy) */
120 MP_CHECKOK(group->meth->field_sqr(qx, &tempx, group->meth));
137 /* rx = lambda^2 - px - qx */
162 ec_GFp_pt_sub_aff(const mp_int *px, const mp_int *py, const mp_int *qx, const mp_int *qy, mp_int *rx, mp_int *ry, const ECGroup *group) argument
200 mp_int k, k3, qx, qy, sx, sy; local
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H A Dec2.h49 /* Computes R = P + Q where R is (rx, ry), P is (px, py) and Q is (qx,
52 const mp_int *qx, const mp_int *qy, mp_int *rx,
57 const mp_int *qx, const mp_int *qy, mp_int *rx,
106 * (qx, qy, qz). Uses projective coordinates. */
108 const mp_int *pz, const mp_int *qx,
H A Decp.h49 /* Computes R = P + Q where R is (rx, ry), P is (px, py) and Q is (qx,
52 const mp_int *qx, const mp_int *qy, mp_int *rx,
57 const mp_int *qx, const mp_int *qy, mp_int *rx,
97 * (qx, qy, qz). Uses Jacobian coordinates. */
99 const mp_int *pz, const mp_int *qx,
H A Decp_jm.c120 * (qx, qy, 1). Elliptic curve points P, Q, and R can all be identical.
126 const mp_int *paz4, const mp_int *qx,
147 MP_CHECKOK(ec_GFp_pt_aff2jac(qx, qy, rx, ry, rz, group));
154 if (ec_GFp_pt_is_inf_aff(qx, qy) == MP_YES) {
162 /* A = qx * pz^2, B = qy * pz^3 */
165 MP_CHECKOK(group->meth->field_mul(A, qx, A, group->meth));
125 ec_GFp_pt_add_jm_aff(const mp_int *px, const mp_int *py, const mp_int *pz, const mp_int *paz4, const mp_int *qx, const mp_int *qy, mp_int *rx, mp_int *ry, mp_int *rz, mp_int *raz4, mp_int scratch[], const ECGroup *group) argument
H A Decl-priv.h187 const mp_int *qx, const mp_int *qy, mp_int *rx,
190 const mp_int *qx, const mp_int *qy, mp_int *rx,
H A Decp_jac.c137 * (qx, qy, 1). Elliptic curve points P, Q, and R can all be identical.
145 const mp_int *qx, const mp_int *qy, mp_int *rx,
167 MP_CHECKOK(ec_GFp_pt_aff2jac(qx, qy, rx, ry, rz, group));
170 if (ec_GFp_pt_is_inf_aff(qx, qy) == MP_YES) {
177 /* A = qx * pz^2, B = qy * pz^3 */
180 MP_CHECKOK(group->meth->field_mul(&A, qx, &A, group->meth));
144 ec_GFp_pt_add_jac_aff(const mp_int *px, const mp_int *py, const mp_int *pz, const mp_int *qx, const mp_int *qy, mp_int *rx, mp_int *ry, mp_int *rz, const ECGroup *group) argument
/openjdk7/hotspot/src/share/vm/runtime/
H A DsharedRuntimeTrig.cpp642 * For better accuracy when x > 0.3, let qx = |x|/4 with
643 * the last 32 bits mask off, and if x > 0.78125, let qx = 0.28125.
645 * cos(x+y) = (1-qx) - ((x*x/2-qx) - (r-x*y)).
646 * Note that 1-qx and (x*x/2-qx) is EXACT here, and the
661 double a,hz,z,r,qx; local
673 qx = 0.28125;
675 __HI(qx) = ix-0x00200000; /* x/4 */
676 __LO(qx)
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