src/gromacs/linearalgebra/gmx_blas.h

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  37 /*! \internal \file
  38  * \brief
  39  * Header definitions for the standard BLAS library.
  40  *
  41  * This is the subset of BLAS routines used for the
  42  * linear algebra operations in Gromacs.
  43  * Do NOT use this for other purposes - we only provide this as a
  44  * simple fallback/reference implementation when no optimized BLAS
  45  * is present. If you need an implementation for your own code
  46  * there are several much faster versions out there.
  47  *
  48  * All routines are compatible with the BLAS reference implementation,
  49  * meaning they assume fortran-style matrix row/column organization.
  50  *
  51  * There is plenty of documentation for these routines available
  52  * at http://www.netlib.org/blas , so there is no point in repeating
  53  * it here.
  54  */
  55 #ifndef GMX_BLAS_H
  56 #define GMX_BLAS_H
  57
  58 /*! \cond */
  59
  60 #include "config.h"
  61
  62 /* These are not required by this file, but by the internal BLAS
  63  * implementation.  In principle, they could be included in each file
  64  * that requires them, but this is simpler.  Since the header is internal
  65  * to the linearyalgebra/ module, the added complexity may not be worth it. */
  66 #include "gromacs/utility/basedefinitions.h"
  67 #include "gromacs/utility/real.h"
  68
  69 #ifdef __cplusplus
  70 extern "C" {
  71 #endif
  72 #if 0
  73 }
  74 #endif
  75
  76 /* Double precision versions */
  77 double
  78     F77_FUNC(dasum, DASUM) (int *n, double *dx, int *incx);
  79
  80 void
  81     F77_FUNC(daxpy, DAXPY) (int *n, double *da, double *dx, int *incx, double *dy, int *incy);
  82
  83 void
  84     F77_FUNC(dcopy, DCOPY) (int *n, double *dx, int *incx, double *dy, int *incy);
  85
  86 double
  87     F77_FUNC(ddot, DDOT) (int *n, double *dx, int *incx, double *dy, int *incy);
  88
  89 void
  90     F77_FUNC(dgemm, DGEMM) (const char *transa, const char *transb, int *m, int *n, int *k,
  91                             double *alpha, double *a, int *lda, double *b, int *ldb,
  92                             double *beta, double *c, int *ldc);
  93
  94 void
  95     F77_FUNC(dgemv, DGEMV) (const char *trans, int *m, int *n, double *alpha, double *a, int *lda,
  96                             double *x, int *incx, double *beta, double *y, int *incy);
  97
  98 void
  99     F77_FUNC(dger, DGER) (int *m, int *n, double *alpha, double *x, int *incx,
 100                           double *y, int *incy, double *a, int *lda);
 101
 102 double
 103     F77_FUNC(dnrm2, DNRM2) (int  *n, double *x, int *incx);
 104
 105 void
 106     F77_FUNC(drot, DROT) (int *n, double *dx, int *incx,
 107                           double *dy, int *incy, double *c, double *s);
 108
 109 void
 110     F77_FUNC(dscal, DSCAL) (int *n, double *fact, double *dx, int *incx);
 111
 112 void
 113     F77_FUNC(dswap, DSWAP) (int *n, double *dx, int *incx, double *dy, int *incy);
 114
 115 void
 116     F77_FUNC(dsymv, DSYMV) (const char *uplo, int *n, double *alpha, double *a, int *lda,
 117                             double *x, int *incx, double *beta, double *y, int *incy);
 118
 119 void
 120     F77_FUNC(dsyr2, DSYR2) (const char *uplo, int *n, double *alpha, double *x, int *incx,
 121                             double *y, int *incy, double *a, int *lda);
 122
 123 void
 124     F77_FUNC(dsyr2k, DSYR2K) (const char *uplo, const char *trans, int *n, int *k, double *alpha, double *a,
 125                               int *lda, double *b, int *ldb, double *beta, double *c, int *ldc);
 126
 127 void
 128     F77_FUNC(dtrmm, DTRMM) (const char *side, const char *uplo, const char *transa, const char *diag, int *m, int *n,
 129                             double *alpha, double *a, int *lda, double *b, int *ldb);
 130
 131 void
 132     F77_FUNC(dtrmv, DTRMV) (const char *uplo, const char *trans, const char *diag, int *n,
 133                             double *a, int *lda, double *x, int *incx);
 134
 135 void
 136     F77_FUNC(dtrsm, DTRSM) (const char *side, const char *uplo, const char *transa, const char *diag, int *m, int *n,
 137                             double *alpha, double *a, int *lda, double *b, int *ldb);
 138
 139 int
 140     F77_FUNC(idamax, IDAMAX) (int *n, double *dx, int *incx);
 141
 142
 143
 144 /* Single precision versions */
 145 float
 146     F77_FUNC(sasum, SASUM) (int *n, float *dx, int *incx);
 147
 148 void
 149     F77_FUNC(saxpy, SAXPY) (int *n, float *da, float *dx, int *incx, float *dy, int *incy);
 150
 151 void
 152     F77_FUNC(scopy, SCOPY) (int *n, float *dx, int *incx, float *dy, int *incy);
 153
 154 float
 155     F77_FUNC(sdot, SDOT) (int *n, float *dx, int *incx, float *dy, int *incy);
 156
 157 void
 158     F77_FUNC(sgemm, SGEMM) (const char *transa, const char *transb, int *m, int *n, int *k,
 159                             float *alpha, float *a, int *lda, float *b, int *ldb,
 160                             float *beta, float *c, int *ldc);
 161
 162 void
 163     F77_FUNC(sgemv, SGEMV) (const char *trans, int *m, int *n, float *alpha, float *a, int *lda,
 164                             float *x, int *incx, float *beta, float *y, int *incy);
 165
 166 void
 167     F77_FUNC(sger, SGER) (int *m, int *n, float *alpha, float *x, int *incx,
 168                           float *y, int *incy, float *a, int *lda);
 169
 170 float
 171     F77_FUNC(snrm2, SNRM2) (int  *n, float *x, int *incx);
 172
 173 void
 174     F77_FUNC(srot, SROT) (int *n, float *dx, int *incx,
 175                           float *dy, int *incy, float *c, float *s);
 176
 177 void
 178     F77_FUNC(sscal, SSCAL) (int *n, float *fact, float *dx, int *incx);
 179
 180 void
 181     F77_FUNC(sswap, SSWAP) (int *n, float *dx, int *incx, float *dy, int *incy);
 182
 183 void
 184     F77_FUNC(ssymv, SSYMV) (const char *uplo, int *n, float *alpha, float *a, int *lda,
 185                             float *x, int *incx, float *beta, float *y, int *incy);
 186
 187 void
 188     F77_FUNC(ssyr2, SSYR2) (const char *uplo, int *n, float *alpha, float *x, int *incx,
 189                             float *y, int *incy, float *a, int *lda);
 190
 191 void
 192     F77_FUNC(ssyr2k, SSYR2K) (const char *uplo, const char *trans, int *n, int *k, float *alpha, float *a,
 193                               int *lda, float *b, int *ldb, float *beta, float *c, int *ldc);
 194
 195 void
 196     F77_FUNC(strmm, STRMM) (const char *side, const char *uplo, const char *transa, const char *diag, int *m, int *n,
 197                             float *alpha, float *a, int *lda, float *b, int *ldb);
 198
 199 void
 200     F77_FUNC(strmv, STRMV) (const char *uplo, const char *trans, const char *diag, int *n,
 201                             float *a, int *lda, float *x, int *incx);
 202
 203 void
 204     F77_FUNC(strsm, STRSM) (const char *side, const char *uplo, const char *transa, const char *diag, int *m, int *n,
 205                             float *alpha, float *a, int *lda, float *b, int *ldb);
 206
 207 int
 208     F77_FUNC(isamax, ISAMAX) (int *n, float *dx, int *incx);
 209
 210
 211 #ifdef __cplusplus
 212 }
 213 #endif
 214
 215 /*! \endcond */
 216
 217 #endif /* GMX_BLAS_H */