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#include "rb_lapack.h"
extern VOID zsyconv_(char* uplo, char* way, integer* n, doublecomplex* a, integer* lda, integer* ipiv, doublecomplex* work, integer* info);
static VALUE
rblapack_zsyconv(int argc, VALUE *argv, VALUE self){
VALUE rblapack_uplo;
char uplo;
VALUE rblapack_way;
char way;
VALUE rblapack_a;
doublecomplex *a;
VALUE rblapack_ipiv;
integer *ipiv;
VALUE rblapack_info;
integer info;
doublecomplex *work;
integer lda;
integer n;
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 = NumRu::Lapack.zsyconv( uplo, way, a, ipiv, [:usage => usage, :help => help])\n\n\nFORTRAN MANUAL\n SUBROUTINE ZSYCONV( UPLO, WAY, N, A, LDA, IPIV, WORK, INFO )\n\n* Purpose\n* =======\n*\n* ZSYCONV converts A given by ZHETRF into L and D or vice-versa.\n* Get nondiagonal elements of D (returned in workspace) and \n* apply or reverse permutation done in TRF.\n*\n\n* Arguments\n* =========\n*\n* UPLO (input) CHARACTER*1\n* Specifies whether the details of the factorization are stored\n* as an upper or lower triangular matrix.\n* = 'U': Upper triangular, form is A = U*D*U**T;\n* = 'L': Lower triangular, form is A = L*D*L**T.\n* \n* WAY (input) CHARACTER*1\n* = 'C': Convert \n* = 'R': Revert\n*\n* N (input) INTEGER\n* The order of the matrix A. N >= 0.\n*\n* A (input) DOUBLE COMPLEX array, dimension (LDA,N)\n* The block diagonal matrix D and the multipliers used to\n* obtain the factor U or L as computed by ZSYTRF.\n*\n* LDA (input) INTEGER\n* The leading dimension of the array A. LDA >= 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 ZSYTRF.\n*\n* WORK (workspace) DOUBLE COMPLEX array, dimension (N)\n*\n* LWORK (input) INTEGER\n* The length of WORK. LWORK >=1. \n* LWORK = N\n*\n* If LWORK = -1, then a workspace query is assumed; the routine\n* only calculates the optimal size of the WORK array, returns\n* this value as the first entry of the WORK array, and no error\n* message related to LWORK is issued by XERBLA.\n*\n* INFO (output) INTEGER\n* = 0: successful exit\n* < 0: if INFO = -i, the i-th argument had an illegal value\n*\n\n* =====================================================================\n*\n\n");
return Qnil;
}
if (rb_hash_aref(rblapack_options, sUsage) == Qtrue) {
printf("%s\n", "USAGE:\n info = NumRu::Lapack.zsyconv( uplo, way, a, ipiv, [:usage => usage, :help => help])\n");
return Qnil;
}
} else
rblapack_options = Qnil;
if (argc != 4 && argc != 4)
rb_raise(rb_eArgError,"wrong number of arguments (%d for 4)", argc);
rblapack_uplo = argv[0];
rblapack_way = argv[1];
rblapack_a = argv[2];
rblapack_ipiv = argv[3];
if (argc == 4) {
} else if (rblapack_options != Qnil) {
} else {
}
uplo = StringValueCStr(rblapack_uplo)[0];
if (!NA_IsNArray(rblapack_a))
rb_raise(rb_eArgError, "a (3th argument) must be NArray");
if (NA_RANK(rblapack_a) != 2)
rb_raise(rb_eArgError, "rank of a (3th argument) must be %d", 2);
lda = NA_SHAPE0(rblapack_a);
n = NA_SHAPE1(rblapack_a);
if (NA_TYPE(rblapack_a) != NA_DCOMPLEX)
rblapack_a = na_change_type(rblapack_a, NA_DCOMPLEX);
a = NA_PTR_TYPE(rblapack_a, doublecomplex*);
way = StringValueCStr(rblapack_way)[0];
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 a");
if (NA_TYPE(rblapack_ipiv) != NA_LINT)
rblapack_ipiv = na_change_type(rblapack_ipiv, NA_LINT);
ipiv = NA_PTR_TYPE(rblapack_ipiv, integer*);
work = ALLOC_N(doublecomplex, (MAX(1,n)));
zsyconv_(&uplo, &way, &n, a, &lda, ipiv, work, &info);
free(work);
rblapack_info = INT2NUM(info);
return rblapack_info;
}
void
init_lapack_zsyconv(VALUE mLapack, VALUE sH, VALUE sU, VALUE zero){
sHelp = sH;
sUsage = sU;
rblapack_ZERO = zero;
rb_define_module_function(mLapack, "zsyconv", rblapack_zsyconv, -1);
}
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