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xzlarf.cpp
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#include "rt_nonfinite.h"
#include "processedout.h"
#include "xzlarf.h"
#include "xgerc.h"
#include "xgemv.h"
static int b_ilazlc(int m, int n, const double A[1080], int ia0);
static int ilazlc(int m, int n, const emxArray_real_T *A, int ia0, int lda);
static int b_ilazlc(int m, int n, const double A[1080], int ia0)
{
int j;
bool exitg2;
int coltop;
int ia;
int exitg1;
j = n;
exitg2 = false;
while ((!exitg2) && (j > 0)) {
coltop = ia0 + (j - 1) * 360;
ia = coltop;
do {
exitg1 = 0;
if (ia <= (coltop + m) - 1) {
if (A[ia - 1] != 0.0) {
exitg1 = 1;
} else {
ia++;
}
} else {
j--;
exitg1 = 2;
}
} while (exitg1 == 0);
if (exitg1 == 1) {
exitg2 = true;
}
}
return j;
}
static int ilazlc(int m, int n, const emxArray_real_T *A, int ia0, int lda)
{
int j;
bool exitg2;
int coltop;
int ia;
int exitg1;
j = n;
exitg2 = false;
while ((!exitg2) && (j > 0)) {
coltop = ia0 + (j - 1) * lda;
ia = coltop;
do {
exitg1 = 0;
if (ia <= (coltop + m) - 1) {
if (A->data[ia - 1] != 0.0) {
exitg1 = 1;
} else {
ia++;
}
} else {
j--;
exitg1 = 2;
}
} while (exitg1 == 0);
if (exitg1 == 1) {
exitg2 = true;
}
}
return j;
}
void b_xzlarf(int m, int n, int iv0, double tau, double C[1080], int ic0, double
work[3])
{
int lastv;
int lastc;
if (tau != 0.0) {
lastv = m;
lastc = iv0 + m;
while ((lastv > 0) && (C[lastc - 2] == 0.0)) {
lastv--;
lastc--;
}
lastc = b_ilazlc(lastv, n, C, ic0);
} else {
lastv = 0;
lastc = 0;
}
if (lastv > 0) {
b_xgemv(lastv, lastc, C, ic0, C, iv0, work);
b_xgerc(lastv, lastc, -tau, iv0, work, C, ic0);
}
}
void xzlarf(int m, int n, int iv0, double tau, emxArray_real_T *C, int ic0, int
ldc, double work[3])
{
int lastv;
int lastc;
if (tau != 0.0) {
lastv = m;
lastc = iv0 + m;
while ((lastv > 0) && (C->data[lastc - 2] == 0.0)) {
lastv--;
lastc--;
}
lastc = ilazlc(lastv, n, C, ic0, ldc);
} else {
lastv = 0;
lastc = 0;
}
if (lastv > 0) {
xgemv(lastv, lastc, C, ic0, ldc, C, iv0, work);
xgerc(lastv, lastc, -tau, iv0, work, C, ic0, ldc);
}
}