#include "rb_lapack.h"

extern doublereal zla_hercond_c_(char* uplo, integer* n, doublecomplex* a, integer* lda, doublecomplex* af, integer* ldaf, integer* ipiv, doublereal* c, logical* capply, integer* info, doublecomplex* work, doublereal* rwork);


static VALUE
rblapack_zla_hercond_c(int argc, VALUE *argv, VALUE self){
#ifdef USEXBLAS
  VALUE rblapack_uplo;
  char uplo; 
  VALUE rblapack_a;
  doublecomplex *a; 
  VALUE rblapack_af;
  doublecomplex *af; 
  VALUE rblapack_ipiv;
  integer *ipiv; 
  VALUE rblapack_c;
  doublereal *c; 
  VALUE rblapack_capply;
  logical capply; 
  VALUE rblapack_work;
  doublecomplex *work; 
  VALUE rblapack_rwork;
  doublereal *rwork; 
  VALUE rblapack_info;
  integer info; 
  VALUE rblapack___out__;
  doublereal __out__; 

  integer lda;
  integer n;
  integer ldaf;

  VALUE rblapack_options;
  if (argc > 0 && TYPE(argv[argc-1]) == T_HASH) {
    argc--;
    rblapack_options = argv[argc];
    if (rb_hash_aref(rblapack_options, sHelp) == Qtrue) {
      printf("%s\n", "USAGE:\n  info, __out__ = NumRu::Lapack.zla_hercond_c( uplo, a, af, ipiv, c, capply, work, rwork, [:usage => usage, :help => help])\n\n\nFORTRAN MANUAL\n      DOUBLE PRECISION FUNCTION ZLA_HERCOND_C( UPLO, N, A, LDA, AF,  LDAF, IPIV, C, CAPPLY, INFO, WORK, RWORK )\n\n*  Purpose\n*  =======\n*\n*     ZLA_HERCOND_C computes the infinity norm condition number of\n*     op(A) * inv(diag(C)) where C is a DOUBLE PRECISION vector.\n*\n\n*  Arguments\n*  =========\n*\n*     UPLO    (input) CHARACTER*1\n*       = 'U':  Upper triangle of A is stored;\n*       = 'L':  Lower triangle of A is stored.\n*\n*     N       (input) INTEGER\n*     The number of linear equations, i.e., the order of the\n*     matrix A.  N >= 0.\n*\n*     A       (input) COMPLEX*16 array, dimension (LDA,N)\n*     On entry, the N-by-N matrix A\n*\n*     LDA     (input) INTEGER\n*     The leading dimension of the array A.  LDA >= max(1,N).\n*\n*     AF      (input) COMPLEX*16 array, dimension (LDAF,N)\n*     The block diagonal matrix D and the multipliers used to\n*     obtain the factor U or L as computed by ZHETRF.\n*\n*     LDAF    (input) INTEGER\n*     The leading dimension of the array AF.  LDAF >= max(1,N).\n*\n*     IPIV    (input) INTEGER array, dimension (N)\n*     Details of the interchanges and the block structure of D\n*     as determined by CHETRF.\n*\n*     C       (input) DOUBLE PRECISION array, dimension (N)\n*     The vector C in the formula op(A) * inv(diag(C)).\n*\n*     CAPPLY  (input) LOGICAL\n*     If .TRUE. then access the vector C in the formula above.\n*\n*     INFO    (output) INTEGER\n*       = 0:  Successful exit.\n*     i > 0:  The ith argument is invalid.\n*\n*     WORK    (input) COMPLEX*16 array, dimension (2*N).\n*     Workspace.\n*\n*     RWORK   (input) DOUBLE PRECISION array, dimension (N).\n*     Workspace.\n*\n\n*  =====================================================================\n*\n*     .. Local Scalars ..\n      INTEGER            KASE, I, J\n      DOUBLE PRECISION   AINVNM, ANORM, TMP\n      LOGICAL            UP\n      COMPLEX*16         ZDUM\n*     ..\n*     .. Local Arrays ..\n      INTEGER            ISAVE( 3 )\n*     ..\n*     .. External Functions ..\n      LOGICAL            LSAME\n      EXTERNAL           LSAME\n*     ..\n*     .. External Subroutines ..\n      EXTERNAL           ZLACN2, ZHETRS, XERBLA\n*     ..\n*     .. Intrinsic Functions ..\n      INTRINSIC          ABS, MAX\n*     ..\n*     .. Statement Functions ..\n      DOUBLE PRECISION   CABS1\n*     ..\n*     .. Statement Function Definitions ..\n      CABS1( ZDUM ) = ABS( DBLE( ZDUM ) ) + ABS( DIMAG( ZDUM ) )\n*     ..\n\n");
      return Qnil;
    }
    if (rb_hash_aref(rblapack_options, sUsage) == Qtrue) {
      printf("%s\n", "USAGE:\n  info, __out__ = NumRu::Lapack.zla_hercond_c( uplo, a, af, ipiv, c, capply, work, rwork, [:usage => usage, :help => help])\n");
      return Qnil;
    } 
  } else
    rblapack_options = Qnil;
  if (argc != 8 && argc != 8)
    rb_raise(rb_eArgError,"wrong number of arguments (%d for 8)", argc);
  rblapack_uplo = argv[0];
  rblapack_a = argv[1];
  rblapack_af = argv[2];
  rblapack_ipiv = argv[3];
  rblapack_c = argv[4];
  rblapack_capply = argv[5];
  rblapack_work = argv[6];
  rblapack_rwork = argv[7];
  if (argc == 8) {
  } else if (rblapack_options != Qnil) {
  } else {
  }

  uplo = StringValueCStr(rblapack_uplo)[0];
  if (!NA_IsNArray(rblapack_af))
    rb_raise(rb_eArgError, "af (3th argument) must be NArray");
  if (NA_RANK(rblapack_af) != 2)
    rb_raise(rb_eArgError, "rank of af (3th argument) must be %d", 2);
  ldaf = NA_SHAPE0(rblapack_af);
  n = NA_SHAPE1(rblapack_af);
  if (NA_TYPE(rblapack_af) != NA_DCOMPLEX)
    rblapack_af = na_change_type(rblapack_af, NA_DCOMPLEX);
  af = NA_PTR_TYPE(rblapack_af, doublecomplex*);
  if (!NA_IsNArray(rblapack_c))
    rb_raise(rb_eArgError, "c (5th argument) must be NArray");
  if (NA_RANK(rblapack_c) != 1)
    rb_raise(rb_eArgError, "rank of c (5th argument) must be %d", 1);
  if (NA_SHAPE0(rblapack_c) != n)
    rb_raise(rb_eRuntimeError, "shape 0 of c must be the same as shape 1 of af");
  if (NA_TYPE(rblapack_c) != NA_DFLOAT)
    rblapack_c = na_change_type(rblapack_c, NA_DFLOAT);
  c = NA_PTR_TYPE(rblapack_c, doublereal*);
  if (!NA_IsNArray(rblapack_rwork))
    rb_raise(rb_eArgError, "rwork (8th argument) must be NArray");
  if (NA_RANK(rblapack_rwork) != 1)
    rb_raise(rb_eArgError, "rank of rwork (8th argument) must be %d", 1);
  if (NA_SHAPE0(rblapack_rwork) != n)
    rb_raise(rb_eRuntimeError, "shape 0 of rwork must be the same as shape 1 of af");
  if (NA_TYPE(rblapack_rwork) != NA_DFLOAT)
    rblapack_rwork = na_change_type(rblapack_rwork, NA_DFLOAT);
  rwork = NA_PTR_TYPE(rblapack_rwork, doublereal*);
  if (!NA_IsNArray(rblapack_a))
    rb_raise(rb_eArgError, "a (2th argument) must be NArray");
  if (NA_RANK(rblapack_a) != 2)
    rb_raise(rb_eArgError, "rank of a (2th argument) must be %d", 2);
  lda = NA_SHAPE0(rblapack_a);
  if (NA_SHAPE1(rblapack_a) != n)
    rb_raise(rb_eRuntimeError, "shape 1 of a must be the same as shape 1 of af");
  if (NA_TYPE(rblapack_a) != NA_DCOMPLEX)
    rblapack_a = na_change_type(rblapack_a, NA_DCOMPLEX);
  a = NA_PTR_TYPE(rblapack_a, doublecomplex*);
  capply = (rblapack_capply == Qtrue);
  if (!NA_IsNArray(rblapack_ipiv))
    rb_raise(rb_eArgError, "ipiv (4th argument) must be NArray");
  if (NA_RANK(rblapack_ipiv) != 1)
    rb_raise(rb_eArgError, "rank of ipiv (4th argument) must be %d", 1);
  if (NA_SHAPE0(rblapack_ipiv) != n)
    rb_raise(rb_eRuntimeError, "shape 0 of ipiv must be the same as shape 1 of af");
  if (NA_TYPE(rblapack_ipiv) != NA_LINT)
    rblapack_ipiv = na_change_type(rblapack_ipiv, NA_LINT);
  ipiv = NA_PTR_TYPE(rblapack_ipiv, integer*);
  if (!NA_IsNArray(rblapack_work))
    rb_raise(rb_eArgError, "work (7th argument) must be NArray");
  if (NA_RANK(rblapack_work) != 1)
    rb_raise(rb_eArgError, "rank of work (7th argument) must be %d", 1);
  if (NA_SHAPE0(rblapack_work) != (2*n))
    rb_raise(rb_eRuntimeError, "shape 0 of work must be %d", 2*n);
  if (NA_TYPE(rblapack_work) != NA_DCOMPLEX)
    rblapack_work = na_change_type(rblapack_work, NA_DCOMPLEX);
  work = NA_PTR_TYPE(rblapack_work, doublecomplex*);

  __out__ = zla_hercond_c_(&uplo, &n, a, &lda, af, &ldaf, ipiv, c, &capply, &info, work, rwork);

  rblapack_info = INT2NUM(info);
  rblapack___out__ = rb_float_new((double)__out__);
  return rb_ary_new3(2, rblapack_info, rblapack___out__);
#else
  return Qnil;
#endif
}

void
init_lapack_zla_hercond_c(VALUE mLapack, VALUE sH, VALUE sU, VALUE zero){
  sHelp = sH;
  sUsage = sU;
  rblapack_ZERO = zero;

  rb_define_module_function(mLapack, "zla_hercond_c", rblapack_zla_hercond_c, -1);
}
