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#include "float_mat.h"
#include <stddef.h>
#define ADD +=
#define MUL *
void REAL_mat_mul1(unsigned m, unsigned n, unsigned p,
REAL * restrict c, unsigned stride_c,
const REAL *a, unsigned stride_a,
const REAL *b, unsigned stride_b) {
for(unsigned i=0; i<m; i++) {
for(unsigned k=0; k<p; k++) {
c[i*stride_c+k] = 0;
}
}
for(unsigned i=0; i<m; i++) {
for(unsigned k=0; k<p; k++) {
for(unsigned j=0; j<n; j++) {
c[i*stride_c+k] ADD (a[i*stride_a+j] MUL b[j*stride_b+k]);
}
}
}
}
void REAL_mat_mul2(unsigned m, unsigned n, unsigned p,
REAL * restrict c, unsigned stride_c,
const REAL *a, unsigned stride_a,
const REAL *b, unsigned stride_b) {
for(unsigned i=0; i<m; i++) {
for(unsigned k=0; k<p; k++) {
REAL total = 0;
for(unsigned j=0; j<n; j++) {
total ADD (a[i*stride_a + j] MUL b[j*stride_b + k]);
}
c[i*stride_c+k] = total;
}
}
}
void REAL_mat_mul3(unsigned m, unsigned n, unsigned p,
REAL * restrict c, unsigned stride_c,
const REAL *a, unsigned stride_a,
const REAL *b, unsigned stride_b) {
for(unsigned i=0; i<m; i++) {
for(unsigned k=0; k<p; k++) {
REAL total0 = 0, total1 = 0;
unsigned j;
for(j=0; j+1<n; j+=2) {
total0 ADD (a[i*stride_a + j] MUL b[j*stride_b + k]);
total1 ADD (a[i*stride_a + (j+1)] MUL b[(j+1)*stride_b + k]);
}
if (j < n) {
total0 ADD a[i*stride_a + j] MUL b[j*stride_b + k];
}
total0 ADD total1;
c[i*stride_c+k] = total0;
}
}
}
void REAL_mat_mul4(unsigned m, unsigned n, unsigned p,
REAL * c, unsigned stride_c,
const REAL *a, unsigned stride_a,
const REAL *b, unsigned stride_b) {
const REAL *pa_i = a;
REAL * pc_i = c;
for(unsigned i=0; i<m; i++) {
for(unsigned k=0; k<p; k++) {
const REAL *pb_j_k = b+k, *pa_i_j = pa_i;
REAL total = 0;
for(unsigned j=0; j<n; j++) {
total ADD (*pa_i_j MUL *pb_j_k);
pa_i_j ++;
pb_j_k += stride_b;
}
pc_i[k] = total;
}
pa_i += stride_a;
pc_i += stride_c;
}
}
void REAL_mat_mul5(unsigned m, unsigned n, unsigned p,
REAL * c, unsigned stride_c,
const REAL *a, unsigned stride_a,
const REAL *b, unsigned stride_b) {
const REAL *pa_i = a;
REAL * pc_i = c;
for(unsigned i=0; i<m; i++) {
for(unsigned k=0; k<p; k++) {
const REAL *pb_j_k = b+k, *pa_i_j = pa_i;
REAL total = 0;
for(unsigned j2=0, n2=n/2; j2<n2; j2++) {
REAL p0 = *pa_i_j MUL *pb_j_k;
pa_i_j ++;
pb_j_k += stride_b;
REAL p1 = *pa_i_j MUL *pb_j_k;
pa_i_j ++;
pb_j_k += stride_b;
total ADD p0;
total ADD p1;
}
if (n%2) {
total ADD *pa_i_j MUL *pb_j_k;
}
pc_i[k] = total;
}
pa_i += stride_a;
pc_i += stride_c;
}
}
#define CHUNK \
total ADD (*pa_i_j MUL *pb_j_k); \
pa_i_j ++; \
pb_j_k += stride_b;
void REAL_mat_mul6(unsigned m, unsigned n, unsigned p,
REAL * c, unsigned stride_c,
const REAL *a, unsigned stride_a,
const REAL *b, unsigned stride_b) {
const REAL *pa_i = a;
REAL * pc_i = c;
for(unsigned i=0; i<m; i++) {
for(unsigned k=0; k<p; k++) {
const REAL *pb_j_k = b+k, *pa_i_j = pa_i;
REAL total = 0;
unsigned j2=0, n2=n/2;
if (n2 > 0) {
do {
CHUNK
CHUNK
j2++;
} while (j2 < n2);
}
if (n%2) {
total ADD (*pa_i_j MUL *pb_j_k);
}
pc_i[k] = total;
}
pa_i += stride_a;
pc_i += stride_c;
}
}
#define UNROLL 4
void REAL_mat_mul7(unsigned m, unsigned n, unsigned p,
REAL * c, unsigned stride_c,
const REAL *a, unsigned stride_a,
const REAL *b, unsigned stride_b) {
const REAL *pa_i = a;
REAL * pc_i = c;
for(unsigned i=0; i<m; i++) {
for(unsigned k=0; k<p; k++) {
const REAL *pb_j_k = b+k, *pa_i_j = pa_i;
REAL total = 0;
{
unsigned j4=0, n4=n/UNROLL;
if (n4 > 0) {
do {
CHUNK
CHUNK
CHUNK
CHUNK
j4++;
} while (j4 < n4);
}
}
{
unsigned j4=0, n4=n%UNROLL;
if (n4 > 0) {
do {
CHUNK
j4++;
} while (j4 < n4);
}
}
pc_i[k] = total;
}
pa_i += stride_a;
pc_i += stride_c;
}
}
#undef CHUNK
#define CHUNK \
total ADD (*pa_i_j MUL *pb_j_k); \
pa_i_j ++; \
pb_j_k = (REAL*) ((char*) pb_j_k + stride_b_scaled);
void REAL_mat_mul8(unsigned m, unsigned n, unsigned p,
REAL * c, unsigned stride_c,
const REAL *a, unsigned stride_a,
const REAL *b, unsigned stride_b) {
const REAL *pa_i = a;
REAL * pc_i = c;
size_t stride_b_scaled = sizeof(REAL) * stride_b;
for(unsigned i=0; i<m; i++) {
for(unsigned k=0; k<p; k++) {
const REAL *pb_j_k = b+k, *pa_i_j = pa_i;
REAL total = 0;
{
unsigned j4=0, n4=n/UNROLL;
if (n4 > 0) {
do {
CHUNK
CHUNK
CHUNK
CHUNK
j4++;
} while (j4 < n4);
}
}
{
unsigned j4=0, n4=n%UNROLL;
if (n4 > 0) {
do {
CHUNK
j4++;
} while (j4 < n4);
}
}
pc_i[k] = total;
}
pa_i += stride_a;
pc_i += stride_c;
}
}
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