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#ifndef TH_GENERIC_FILE
#define TH_GENERIC_FILE "generic/THBlas.c"
#else
#ifdef BLAS_F2C
# define ffloat double
#else
# define ffloat float
#endif
TH_EXTERNC void dswap_(int *n, double *x, int *incx, double *y, int *incy);
TH_EXTERNC void sswap_(int *n, float *x, int *incx, float *y, int *incy);
TH_EXTERNC void dscal_(int *n, double *a, double *x, int *incx);
TH_EXTERNC void sscal_(int *n, float *a, float *x, int *incx);
TH_EXTERNC void dcopy_(int *n, double *x, int *incx, double *y, int *incy);
TH_EXTERNC void scopy_(int *n, float *x, int *incx, float *y, int *incy);
TH_EXTERNC void daxpy_(int *n, double *a, double *x, int *incx, double *y, int *incy);
TH_EXTERNC void saxpy_(int *n, float *a, float *x, int *incx, float *y, int *incy);
TH_EXTERNC double ddot_(int *n, double *x, int *incx, double *y, int *incy);
TH_EXTERNC ffloat sdot_(int *n, float *x, int *incx, float *y, int *incy);
TH_EXTERNC void dgemv_(char *trans, int *m, int *n, double *alpha, double *a, int *lda, double *x, int *incx, double *beta, double *y, int *incy);
TH_EXTERNC void sgemv_(char *trans, int *m, int *n, float *alpha, float *a, int *lda, float *x, int *incx, float *beta, float *y, int *incy);
TH_EXTERNC void dger_(int *m, int *n, double *alpha, double *x, int *incx, double *y, int *incy, double *a, int *lda);
TH_EXTERNC void sger_(int *m, int *n, float *alpha, float *x, int *incx, float *y, int *incy, float *a, int *lda);
TH_EXTERNC void dgemm_(char *transa, char *transb, int *m, int *n, int *k, double *alpha, double *a, int *lda, double *b, int *ldb, double *beta, double *c, int *ldc);
TH_EXTERNC void sgemm_(char *transa, char *transb, int *m, int *n, int *k, float *alpha, float *a, int *lda, float *b, int *ldb, float *beta, float *c, int *ldc);
void THBlas_(swap)(long n, real *x, long incx, real *y, long incy)
{
if(n == 1)
{
incx = 1;
incy = 1;
}
#if defined(USE_BLAS) && (defined(TH_REAL_IS_DOUBLE) || defined(TH_REAL_IS_FLOAT))
if( (n <= INT_MAX) && (incx <= INT_MAX) && (incy <= INT_MAX) )
{
int i_n = (int)n;
int i_incx = (int)incx;
int i_incy = (int)incy;
#if defined(TH_REAL_IS_DOUBLE)
dswap_(&i_n, x, &i_incx, y, &i_incy);
#else
sswap_(&i_n, x, &i_incx, y, &i_incy);
#endif
return;
}
#endif
{
long i;
for(i = 0; i < n; i++)
{
real z = x[i*incx];
x[i*incx] = y[i*incy];
y[i*incy] = z;
}
}
}
void THBlas_(scal)(long n, real a, real *x, long incx)
{
if(n == 1)
incx = 1;
#if defined(USE_BLAS) && (defined(TH_REAL_IS_DOUBLE) || defined(TH_REAL_IS_FLOAT))
if( (n <= INT_MAX) && (incx <= INT_MAX) )
{
int i_n = (int)n;
int i_incx = (int)incx;
#if defined(TH_REAL_IS_DOUBLE)
dscal_(&i_n, &a, x, &i_incx);
#else
sscal_(&i_n, &a, x, &i_incx);
#endif
return;
}
#endif
{
long i;
for(i = 0; i < n; i++)
x[i*incx] *= a;
}
}
void THBlas_(copy)(long n, real *x, long incx, real *y, long incy)
{
if(n == 1)
{
incx = 1;
incy = 1;
}
#if defined(USE_BLAS) && (defined(TH_REAL_IS_DOUBLE) || defined(TH_REAL_IS_FLOAT))
if( (n <= INT_MAX) && (incx <= INT_MAX) && (incy <= INT_MAX) )
{
int i_n = (int)n;
int i_incx = (int)incx;
int i_incy = (int)incy;
#if defined(TH_REAL_IS_DOUBLE)
dcopy_(&i_n, x, &i_incx, y, &i_incy);
#else
scopy_(&i_n, x, &i_incx, y, &i_incy);
#endif
return;
}
#endif
{
long i;
for(i = 0; i < n; i++)
y[i*incy] = x[i*incx];
}
}
void THBlas_(axpy)(long n, real a, real *x, long incx, real *y, long incy)
{
if(n == 1)
{
incx = 1;
incy = 1;
}
#if defined(USE_BLAS) && (defined(TH_REAL_IS_DOUBLE) || defined(TH_REAL_IS_FLOAT))
if( (n <= INT_MAX) && (incx <= INT_MAX) && (incy <= INT_MAX) )
{
int i_n = (int)n;
int i_incx = (int)incx;
int i_incy = (int)incy;
#if defined(TH_REAL_IS_DOUBLE)
daxpy_(&i_n, &a, x, &i_incx, y, &i_incy);
#else
saxpy_(&i_n, &a, x, &i_incx, y, &i_incy);
#endif
return;
}
#endif
{
long i;
for(i = 0; i < n; i++)
y[i*incy] += a*x[i*incx];
}
}
real THBlas_(dot)(long n, real *x, long incx, real *y, long incy)
{
if(n == 1)
{
incx = 1;
incy = 1;
}
#if defined(USE_BLAS) && (defined(TH_REAL_IS_DOUBLE) || defined(TH_REAL_IS_FLOAT))
if( (n <= INT_MAX) && (incx <= INT_MAX) && (incy <= INT_MAX) )
{
int i_n = (int)n;
int i_incx = (int)incx;
int i_incy = (int)incy;
#if defined(TH_REAL_IS_DOUBLE)
return (real) ddot_(&i_n, x, &i_incx, y, &i_incy);
#else
return (real) sdot_(&i_n, x, &i_incx, y, &i_incy);
#endif
}
#endif
{
long i;
real sum = 0;
for(i = 0; i < n; i++)
sum += x[i*incx]*y[i*incy];
return sum;
}
}
void THBlas_(gemv)(char trans, long m, long n, real alpha, real *a, long lda, real *x, long incx, real beta, real *y, long incy)
{
if(n == 1)
lda = m;
#if defined(USE_BLAS) && (defined(TH_REAL_IS_DOUBLE) || defined(TH_REAL_IS_FLOAT))
if( (m <= INT_MAX) && (n <= INT_MAX) &&
(lda > 0) && (lda <= INT_MAX) &&
(incx > 0) && (incx <= INT_MAX) &&
(incy > 0) && (incy <= INT_MAX) )
{
int i_m = (int)m;
int i_n = (int)n;
int i_lda = (int)lda;
int i_incx = (int)incx;
int i_incy = (int)incy;
#if defined(TH_REAL_IS_DOUBLE)
dgemv_(&trans, &i_m, &i_n, &alpha, a, &i_lda, x, &i_incx, &beta, y, &i_incy);
#else
sgemv_(&trans, &i_m, &i_n, &alpha, a, &i_lda, x, &i_incx, &beta, y, &i_incy);
#endif
return;
}
#endif
{
long i, j;
if( (trans == 'T') || (trans == 't') )
{
for(i = 0; i < n; i++)
{
real sum = 0;
real *row_ = a+lda*i;
for(j = 0; j < m; j++)
sum += x[j*incx]*row_[j];
if (beta == 0)
y[i*incy] = alpha*sum;
else
y[i*incy] = beta*y[i*incy] + alpha*sum;
}
}
else
{
if(beta != 1)
THBlas_(scal)(m, beta, y, incy);
for(j = 0; j < n; j++)
{
real *column_ = a+lda*j;
real z = alpha*x[j*incx];
for(i = 0; i < m; i++)
y[i*incy] += z*column_[i];
}
}
}
}
void THBlas_(ger)(long m, long n, real alpha, real *x, long incx, real *y, long incy, real *a, long lda)
{
if(n == 1)
lda = m;
#if defined(USE_BLAS) && (defined(TH_REAL_IS_DOUBLE) || defined(TH_REAL_IS_FLOAT))
if( (m <= INT_MAX) && (n <= INT_MAX) && (lda <= INT_MAX) && (incx <= INT_MAX) && (incy <= INT_MAX) )
{
int i_m = (int)m;
int i_n = (int)n;
int i_lda = (int)lda;
int i_incx = (int)incx;
int i_incy = (int)incy;
#if defined(TH_REAL_IS_DOUBLE)
dger_(&i_m, &i_n, &alpha, x, &i_incx, y, &i_incy, a, &i_lda);
#else
sger_(&i_m, &i_n, &alpha, x, &i_incx, y, &i_incy, a, &i_lda);
#endif
return;
}
#endif
{
long i, j;
for(j = 0; j < n; j++)
{
real *column_ = a+j*lda;
real z = alpha*y[j*incy];
for(i = 0; i < m; i++)
column_[i] += z*x[i*incx] ;
}
}
}
void THBlas_(gemm)(char transa, char transb, long m, long n, long k, real alpha, real *a, long lda, real *b, long ldb, real beta, real *c, long ldc)
{
int transa_ = ((transa == 't') || (transa == 'T'));
int transb_ = ((transb == 't') || (transb == 'T'));
if(n == 1)
ldc = m;
if(transa_)
{
if(m == 1)
lda = k;
}
else
{
if(k == 1)
lda = m;
}
if(transb_)
{
if(k == 1)
ldb = n;
}
else
{
if(n == 1)
ldb = k;
}
#if defined(USE_BLAS) && (defined(TH_REAL_IS_DOUBLE) || defined(TH_REAL_IS_FLOAT))
if( (m <= INT_MAX) && (n <= INT_MAX) && (k <= INT_MAX) && (lda <= INT_MAX) && (ldb <= INT_MAX) && (ldc <= INT_MAX) )
{
int i_m = (int)m;
int i_n = (int)n;
int i_k = (int)k;
int i_lda = (int)lda;
int i_ldb = (int)ldb;
int i_ldc = (int)ldc;
#if defined(TH_REAL_IS_DOUBLE)
dgemm_(&transa, &transb, &i_m, &i_n, &i_k, &alpha, a, &i_lda, b, &i_ldb, &beta, c, &i_ldc);
#else
sgemm_(&transa, &transb, &i_m, &i_n, &i_k, &alpha, a, &i_lda, b, &i_ldb, &beta, c, &i_ldc);
#endif
return;
}
#endif
{
long i, j, l;
if(!transa_ && !transb_)
{
real *a_ = a;
for(i = 0; i < m; i++)
{
real *b_ = b;
for(j = 0; j < n; j++)
{
real sum = 0;
for(l = 0; l < k; l++)
sum += a_[l*lda]*b_[l];
b_ += ldb;
if (beta == 0)
c[j*ldc+i] = alpha*sum;
else
c[j*ldc+i] = beta*c[j*ldc+i]+alpha*sum;
}
a_++;
}
}
else if(transa_ && !transb_)
{
real *a_ = a;
for(i = 0; i < m; i++)
{
real *b_ = b;
for(j = 0; j < n; j++)
{
real sum = 0;
for(l = 0; l < k; l++)
sum += a_[l]*b_[l];
b_ += ldb;
if (beta == 0)
c[j*ldc+i] = alpha*sum;
else
c[j*ldc+i] = beta*c[j*ldc+i]+alpha*sum;
}
a_ += lda;
}
}
else if(!transa_ && transb_)
{
real *a_ = a;
for(i = 0; i < m; i++)
{
real *b_ = b;
for(j = 0; j < n; j++)
{
real sum = 0;
for(l = 0; l < k; l++)
sum += a_[l*lda]*b_[l*ldb];
b_++;
if (beta == 0)
c[j*ldc+i] = alpha*sum;
else
c[j*ldc+i] = beta*c[j*ldc+i]+alpha*sum;
}
a_++;
}
}
else
{
real *a_ = a;
for(i = 0; i < m; i++)
{
real *b_ = b;
for(j = 0; j < n; j++)
{
real sum = 0;
for(l = 0; l < k; l++)
sum += a_[l]*b_[l*ldb];
b_++;
if (beta == 0)
c[j*ldc+i] = alpha*sum;
else
c[j*ldc+i] = beta*c[j*ldc+i]+alpha*sum;
}
a_ += lda;
}
}
}
}
#endif
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