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#include "rb_lapack.h"
extern VOID ctrtri_(char* uplo, char* diag, integer* n, complex* a, integer* lda, integer* info);
static VALUE
rblapack_ctrtri(int argc, VALUE *argv, VALUE self){
VALUE rblapack_uplo;
char uplo;
VALUE rblapack_diag;
char diag;
VALUE rblapack_a;
complex *a;
VALUE rblapack_info;
integer info;
VALUE rblapack_a_out__;
complex *a_out__;
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, a = NumRu::Lapack.ctrtri( uplo, diag, a, [:usage => usage, :help => help])\n\n\nFORTRAN MANUAL\n SUBROUTINE CTRTRI( UPLO, DIAG, N, A, LDA, INFO )\n\n* Purpose\n* =======\n*\n* CTRTRI computes the inverse of a complex upper or lower triangular\n* matrix A.\n*\n* This is the Level 3 BLAS version of the algorithm.\n*\n\n* Arguments\n* =========\n*\n* UPLO (input) CHARACTER*1\n* = 'U': A is upper triangular;\n* = 'L': A is lower triangular.\n*\n* DIAG (input) CHARACTER*1\n* = 'N': A is non-unit triangular;\n* = 'U': A is unit triangular.\n*\n* N (input) INTEGER\n* The order of the matrix A. N >= 0.\n*\n* A (input/output) COMPLEX array, dimension (LDA,N)\n* On entry, the triangular matrix A. If UPLO = 'U', the\n* leading N-by-N upper triangular part of the array A contains\n* the upper triangular matrix, and the strictly lower\n* triangular part of A is not referenced. If UPLO = 'L', the\n* leading N-by-N lower triangular part of the array A contains\n* the lower triangular matrix, and the strictly upper\n* triangular part of A is not referenced. If DIAG = 'U', the\n* diagonal elements of A are also not referenced and are\n* assumed to be 1.\n* On exit, the (triangular) inverse of the original matrix, in\n* the same storage format.\n*\n* LDA (input) INTEGER\n* The leading dimension of the array A. LDA >= max(1,N).\n*\n* INFO (output) INTEGER\n* = 0: successful exit\n* < 0: if INFO = -i, the i-th argument had an illegal value\n* > 0: if INFO = i, A(i,i) is exactly zero. The triangular\n* matrix is singular and its inverse can not be computed.\n*\n\n* =====================================================================\n*\n\n");
return Qnil;
}
if (rb_hash_aref(rblapack_options, sUsage) == Qtrue) {
printf("%s\n", "USAGE:\n info, a = NumRu::Lapack.ctrtri( uplo, diag, a, [:usage => usage, :help => help])\n");
return Qnil;
}
} else
rblapack_options = Qnil;
if (argc != 3 && argc != 3)
rb_raise(rb_eArgError,"wrong number of arguments (%d for 3)", argc);
rblapack_uplo = argv[0];
rblapack_diag = argv[1];
rblapack_a = argv[2];
if (argc == 3) {
} 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_SCOMPLEX)
rblapack_a = na_change_type(rblapack_a, NA_SCOMPLEX);
a = NA_PTR_TYPE(rblapack_a, complex*);
diag = StringValueCStr(rblapack_diag)[0];
{
na_shape_t shape[2];
shape[0] = lda;
shape[1] = n;
rblapack_a_out__ = na_make_object(NA_SCOMPLEX, 2, shape, cNArray);
}
a_out__ = NA_PTR_TYPE(rblapack_a_out__, complex*);
MEMCPY(a_out__, a, complex, NA_TOTAL(rblapack_a));
rblapack_a = rblapack_a_out__;
a = a_out__;
ctrtri_(&uplo, &diag, &n, a, &lda, &info);
rblapack_info = INT2NUM(info);
return rb_ary_new3(2, rblapack_info, rblapack_a);
}
void
init_lapack_ctrtri(VALUE mLapack, VALUE sH, VALUE sU, VALUE zero){
sHelp = sH;
sUsage = sU;
rblapack_ZERO = zero;
rb_define_module_function(mLapack, "ctrtri", rblapack_ctrtri, -1);
}
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