level2_cplx_impl.h

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// This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
//
// Copyright (C) 2009-2010 Gael Guennebaud <gael.guennebaud@inria.fr>
//
// This Source Code Form is subject to the terms of the Mozilla
// Public License v. 2.0. If a copy of the MPL was not distributed
// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
#include "common.h"
 
EIGEN_BLAS_FUNC(hemv)
(const char *uplo, const int *n, const RealScalar *palpha, const RealScalar *pa, const int *lda, const RealScalar *px,
 const int *incx, const RealScalar *pbeta, RealScalar *py, const int *incy) {
  typedef void (*functype)(int, const Scalar *, int, const Scalar *, Scalar *, Scalar);
  static const functype func[2] = {
      // array index: UP
      (Eigen::internal::selfadjoint_matrix_vector_product<Scalar, int, Eigen::ColMajor, Eigen::Upper, false,
                                                          false>::run),
      // array index: LO
      (Eigen::internal::selfadjoint_matrix_vector_product<Scalar, int, Eigen::ColMajor, Eigen::Lower, false,
                                                          false>::run),
  };
 
  const Scalar *a = reinterpret_cast<const Scalar *>(pa);
  const Scalar *x = reinterpret_cast<const Scalar *>(px);
  Scalar *y = reinterpret_cast<Scalar *>(py);
  Scalar alpha = *reinterpret_cast<const Scalar *>(palpha);
  Scalar beta = *reinterpret_cast<const Scalar *>(pbeta);
 
  // check arguments
  int info = 0;
  if (UPLO(*uplo) == INVALID)
    info = 1;
  else if (*n < 0)
    info = 2;
  else if (*lda < std::max(1, *n))
    info = 5;
  else if (*incx == 0)
    info = 7;
  else if (*incy == 0)
    info = 10;
  if (info) return xerbla_(SCALAR_SUFFIX_UP "HEMV ", &info);
 
  if (*n == 0) return;
 
  const Scalar *actual_x = get_compact_vector(x, *n, *incx);
  Scalar *actual_y = get_compact_vector(y, *n, *incy);
 
  if (beta != Scalar(1)) {
    if (beta == Scalar(0))
      make_vector(actual_y, *n).setZero();
    else
      make_vector(actual_y, *n) *= beta;
  }
 
  if (alpha != Scalar(0)) {
    int code = UPLO(*uplo);
    if (code >= 2 || func[code] == 0) return;
 
    func[code](*n, a, *lda, actual_x, actual_y, alpha);
  }
 
  if (actual_x != x) delete[] actual_x;
  if (actual_y != y) delete[] copy_back(actual_y, y, *n, *incy);
}
 
// EIGEN_BLAS_FUNC(hbmv)(char *uplo, int *n, int *k, RealScalar *alpha, RealScalar *a, int *lda,
//                           RealScalar *x, int *incx, RealScalar *beta, RealScalar *y, int *incy)
// {
//   return 1;
// }
 
// EIGEN_BLAS_FUNC(hpmv)(char *uplo, int *n, RealScalar *alpha, RealScalar *ap, RealScalar *x, int *incx, RealScalar
// *beta, RealScalar *y, int *incy)
// {
//   return 1;
// }
 
EIGEN_BLAS_FUNC(hpr)(char *uplo, int *n, RealScalar *palpha, RealScalar *px, int *incx, RealScalar *pap) {
  typedef void (*functype)(int, Scalar *, const Scalar *, RealScalar);
  static const functype func[2] = {
      // array index: UP
      (Eigen::internal::selfadjoint_packed_rank1_update<Scalar, int, Eigen::ColMajor, Eigen::Upper, false, Conj>::run),
      // array index: LO
      (Eigen::internal::selfadjoint_packed_rank1_update<Scalar, int, Eigen::ColMajor, Eigen::Lower, false, Conj>::run),
  };
 
  Scalar *x = reinterpret_cast<Scalar *>(px);
  Scalar *ap = reinterpret_cast<Scalar *>(pap);
  RealScalar alpha = *palpha;
 
  int info = 0;
  if (UPLO(*uplo) == INVALID)
    info = 1;
  else if (*n < 0)
    info = 2;
  else if (*incx == 0)
    info = 5;
  if (info) return xerbla_(SCALAR_SUFFIX_UP "HPR  ", &info);
 
  if (alpha == Scalar(0)) return;
 
  Scalar *x_cpy = get_compact_vector(x, *n, *incx);
 
  int code = UPLO(*uplo);
  if (code >= 2 || func[code] == 0) return;
 
  func[code](*n, ap, x_cpy, alpha);
 
  if (x_cpy != x) delete[] x_cpy;
}
 
EIGEN_BLAS_FUNC(hpr2)
(char *uplo, int *n, RealScalar *palpha, RealScalar *px, int *incx, RealScalar *py, int *incy, RealScalar *pap) {
  typedef void (*functype)(int, Scalar *, const Scalar *, const Scalar *, Scalar);
  static const functype func[2] = {
      // array index: UP
      (Eigen::internal::packed_rank2_update_selector<Scalar, int, Eigen::Upper>::run),
      // array index: LO
      (Eigen::internal::packed_rank2_update_selector<Scalar, int, Eigen::Lower>::run),
  };
 
  Scalar *x = reinterpret_cast<Scalar *>(px);
  Scalar *y = reinterpret_cast<Scalar *>(py);
  Scalar *ap = reinterpret_cast<Scalar *>(pap);
  Scalar alpha = *reinterpret_cast<Scalar *>(palpha);
 
  int info = 0;
  if (UPLO(*uplo) == INVALID)
    info = 1;
  else if (*n < 0)
    info = 2;
  else if (*incx == 0)
    info = 5;
  else if (*incy == 0)
    info = 7;
  if (info) return xerbla_(SCALAR_SUFFIX_UP "HPR2 ", &info);
 
  if (alpha == Scalar(0)) return;
 
  Scalar *x_cpy = get_compact_vector(x, *n, *incx);
  Scalar *y_cpy = get_compact_vector(y, *n, *incy);
 
  int code = UPLO(*uplo);
  if (code >= 2 || func[code] == 0) return;
 
  func[code](*n, ap, x_cpy, y_cpy, alpha);
 
  if (x_cpy != x) delete[] x_cpy;
  if (y_cpy != y) delete[] y_cpy;
}
 
EIGEN_BLAS_FUNC(her)(char *uplo, int *n, RealScalar *palpha, RealScalar *px, int *incx, RealScalar *pa, int *lda) {
  typedef void (*functype)(int, Scalar *, int, const Scalar *, const Scalar *, const Scalar &);
  static const functype func[2] = {
      // array index: UP
      (Eigen::selfadjoint_rank1_update<Scalar, int, Eigen::ColMajor, Eigen::Upper, false, Conj>::run),
      // array index: LO
      (Eigen::selfadjoint_rank1_update<Scalar, int, Eigen::ColMajor, Eigen::Lower, false, Conj>::run),
  };
 
  Scalar *x = reinterpret_cast<Scalar *>(px);
  Scalar *a = reinterpret_cast<Scalar *>(pa);
  RealScalar alpha = *reinterpret_cast<RealScalar *>(palpha);
 
  int info = 0;
  if (UPLO(*uplo) == INVALID)
    info = 1;
  else if (*n < 0)
    info = 2;
  else if (*incx == 0)
    info = 5;
  else if (*lda < std::max(1, *n))
    info = 7;
  if (info) return xerbla_(SCALAR_SUFFIX_UP "HER  ", &info);
 
  if (alpha == RealScalar(0)) return;
 
  Scalar *x_cpy = get_compact_vector(x, *n, *incx);
 
  int code = UPLO(*uplo);
  if (code >= 2 || func[code] == 0) return;
 
  func[code](*n, a, *lda, x_cpy, x_cpy, alpha);
 
  matrix(a, *n, *n, *lda).diagonal().imag().setZero();
 
  if (x_cpy != x) delete[] x_cpy;
}
 
EIGEN_BLAS_FUNC(her2)
(char *uplo, int *n, RealScalar *palpha, RealScalar *px, int *incx, RealScalar *py, int *incy, RealScalar *pa,
 int *lda) {
  typedef void (*functype)(int, Scalar *, int, const Scalar *, const Scalar *, Scalar);
  static const functype func[2] = {
      // array index: UP
      (Eigen::internal::rank2_update_selector<Scalar, int, Eigen::Upper>::run),
      // array index: LO
      (Eigen::internal::rank2_update_selector<Scalar, int, Eigen::Lower>::run),
  };
 
  Scalar *x = reinterpret_cast<Scalar *>(px);
  Scalar *y = reinterpret_cast<Scalar *>(py);
  Scalar *a = reinterpret_cast<Scalar *>(pa);
  Scalar alpha = *reinterpret_cast<Scalar *>(palpha);
 
  int info = 0;
  if (UPLO(*uplo) == INVALID)
    info = 1;
  else if (*n < 0)
    info = 2;
  else if (*incx == 0)
    info = 5;
  else if (*incy == 0)
    info = 7;
  else if (*lda < std::max(1, *n))
    info = 9;
  if (info) return xerbla_(SCALAR_SUFFIX_UP "HER2 ", &info);
 
  if (alpha == Scalar(0)) return;
 
  Scalar *x_cpy = get_compact_vector(x, *n, *incx);
  Scalar *y_cpy = get_compact_vector(y, *n, *incy);
 
  int code = UPLO(*uplo);
  if (code >= 2 || func[code] == 0) return;
 
  func[code](*n, a, *lda, x_cpy, y_cpy, alpha);
 
  matrix(a, *n, *n, *lda).diagonal().imag().setZero();
 
  if (x_cpy != x) delete[] x_cpy;
  if (y_cpy != y) delete[] y_cpy;
}
 
EIGEN_BLAS_FUNC(geru)
(int *m, int *n, RealScalar *palpha, RealScalar *px, int *incx, RealScalar *py, int *incy, RealScalar *pa, int *lda) {
  Scalar *x = reinterpret_cast<Scalar *>(px);
  Scalar *y = reinterpret_cast<Scalar *>(py);
  Scalar *a = reinterpret_cast<Scalar *>(pa);
  Scalar alpha = *reinterpret_cast<Scalar *>(palpha);
 
  int info = 0;
  if (*m < 0)
    info = 1;
  else if (*n < 0)
    info = 2;
  else if (*incx == 0)
    info = 5;
  else if (*incy == 0)
    info = 7;
  else if (*lda < std::max(1, *m))
    info = 9;
  if (info) return xerbla_(SCALAR_SUFFIX_UP "GERU ", &info);
 
  if (alpha == Scalar(0)) return;
 
  Scalar *x_cpy = get_compact_vector(x, *m, *incx);
  Scalar *y_cpy = get_compact_vector(y, *n, *incy);
 
  Eigen::internal::general_rank1_update<Scalar, int, Eigen::ColMajor, false, false>::run(*m, *n, a, *lda, x_cpy, y_cpy,
                                                                                         alpha);
 
  if (x_cpy != x) delete[] x_cpy;
  if (y_cpy != y) delete[] y_cpy;
}
 
EIGEN_BLAS_FUNC(gerc)
(int *m, int *n, RealScalar *palpha, RealScalar *px, int *incx, RealScalar *py, int *incy, RealScalar *pa, int *lda) {
  Scalar *x = reinterpret_cast<Scalar *>(px);
  Scalar *y = reinterpret_cast<Scalar *>(py);
  Scalar *a = reinterpret_cast<Scalar *>(pa);
  Scalar alpha = *reinterpret_cast<Scalar *>(palpha);
 
  int info = 0;
  if (*m < 0)
    info = 1;
  else if (*n < 0)
    info = 2;
  else if (*incx == 0)
    info = 5;
  else if (*incy == 0)
    info = 7;
  else if (*lda < std::max(1, *m))
    info = 9;
  if (info) return xerbla_(SCALAR_SUFFIX_UP "GERC ", &info);
 
  if (alpha == Scalar(0)) return;
 
  Scalar *x_cpy = get_compact_vector(x, *m, *incx);
  Scalar *y_cpy = get_compact_vector(y, *n, *incy);
 
  Eigen::internal::general_rank1_update<Scalar, int, Eigen::ColMajor, false, Conj>::run(*m, *n, a, *lda, x_cpy, y_cpy,
                                                                                        alpha);
 
  if (x_cpy != x) delete[] x_cpy;
  if (y_cpy != y) delete[] y_cpy;
}