blasint CNAME(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n, FLOAT *sa, FLOAT *sb, BLASLONG myid) {
BLASLONG m, n, lda;
blasint *ipiv, offset;
FLOAT *a;
FLOAT temp1, temp2;
blasint i, j;
blasint ip, jp;
blasint info;
BLASLONG len;
FLOAT *b;
m = args -> m;
n = args -> n;
a = (FLOAT *)args -> a;
lda = args -> lda;
ipiv = (blasint *)args -> c;
offset = 0;
if (range_n) {
m -= range_n[0];
n = range_n[1] - range_n[0];
offset = range_n[0];
a += range_n[0] * (lda + 1) * COMPSIZE;
}
info = 0;
b = a;
for (j = 0; j < n; j++) {
len = MIN(j, m);
for (i = 0; i < len; i++) {
ip = ipiv[i + offset] - 1 - offset;
if (ip != i) {
temp1 = *(b + i);
temp2 = *(b + ip);
*(b + i) = temp2;
*(b + ip) = temp1;
}
}
for (i = 1; i < len; i++) {
b[i] -= DOTU_K(i, a + i, lda, b, 1);
}
if (j < m) {
GEMV_N(m - j, j, 0, dm1, a + j, lda, b, 1, b + j, 1, sb);
jp = j + IAMAX_K(m - j, b + j, 1);
ipiv[j + offset] = jp + offset;
jp--;
temp1 = *(b + jp);
if (temp1 != ZERO) {
temp1 = dp1 / temp1;
if (jp != j) {
SWAP_K(j + 1, 0, 0, ZERO, a + j, lda, a + jp, lda, NULL, 0);
}
if (j + 1 < m) {
SCAL_K(m - j - 1, 0, 0, temp1, b + j + 1, 1, NULL, 0, NULL, 0);
}
} else {
if (!info) info = j + 1;
}
}
b += lda;
}
return info;
}
blasint CNAME(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n, FLOAT *sa, FLOAT *sb, BLASLONG myid) {
BLASLONG m, n, lda, offset;
blasint *ipiv;
FLOAT *a;
FLOAT temp1, temp2, temp3, temp4, ratio, den;
blasint i, j;
blasint ip, jp;
blasint info;
BLASLONG len;
FLOAT *b;
m = args -> m;
n = args -> n;
a = (FLOAT *)args -> a;
lda = args -> lda;
ipiv = (blasint *)args -> c;
offset = 0;
if (range_n) {
m -= range_n[0];
n = range_n[1] - range_n[0];
offset = range_n[0];
a += range_n[0] * (lda + 1) * COMPSIZE;
}
info = 0;
b = a;
for (j = 0; j < n; j++) {
len = MIN(j, m);
for (i = 0; i < len; i++) {
ip = ipiv[i + offset] - 1 - offset;
if (ip != i) {
temp1 = *(b + i * 2 + 0);
temp2 = *(b + i * 2 + 1);
temp3 = *(b + ip * 2 + 0);
temp4 = *(b + ip * 2 + 1);
*(b + i * 2 + 0) = temp3;
*(b + i * 2 + 1) = temp4;
*(b + ip * 2 + 0) = temp1;
*(b + ip * 2 + 1) = temp2;
}
}
ZTRSV_NLU(len, a, lda, b, 1, sb);
if (j < m) {
GEMV_N(m - j, j, 0, dm1, ZERO, a + j * 2, lda, b, 1, b + j * 2, 1, sb);
jp = j + IAMAX_K(m - j, b + j * 2, 1);
ipiv[j + offset] = jp + offset;
jp--;
temp1 = *(b + jp * 2 + 0);
temp2 = *(b + jp * 2 + 1);
if ((temp1 != ZERO) || (temp2 != ZERO)) {
if (jp != j) {
SWAP_K(j + 1, 0, 0, ZERO, ZERO, a + j * 2, lda,
a + jp * 2, lda, NULL, 0);
}
if (fabs(temp1) >= fabs(temp2)){
ratio = temp2 / temp1;
den = dp1 /(temp1 * ( 1 + ratio * ratio));
temp3 = den;
temp4 = -ratio * den;
} else {
ratio = temp1 / temp2;
den = dp1 /(temp2 * ( 1 + ratio * ratio));
temp3 = ratio * den;
temp4 = -den;
}
if (j + 1 < m) {
SCAL_K(m - j - 1, 0, 0, temp3, temp4,
b + (j + 1) * 2, 1, NULL, 0, NULL, 0);
}
} else {
if (!info) info = j + 1;
}
}
b += lda * 2;
}
return info;
}
