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#include "rb_lapack.h"
extern doublereal dla_gbrcond_(char* trans, integer* n, integer* kl, integer* ku, doublereal* ab, integer* ldab, doublereal* afb, integer* ldafb, integer* ipiv, integer* cmode, doublereal* c, integer* info, doublereal* work, integer* iwork);
static VALUE
rblapack_dla_gbrcond(int argc, VALUE *argv, VALUE self){
VALUE rblapack_trans;
char trans;
VALUE rblapack_kl;
integer kl;
VALUE rblapack_ku;
integer ku;
VALUE rblapack_ab;
doublereal *ab;
VALUE rblapack_afb;
doublereal *afb;
VALUE rblapack_ipiv;
integer *ipiv;
VALUE rblapack_cmode;
integer cmode;
VALUE rblapack_c;
doublereal *c;
VALUE rblapack_work;
doublereal *work;
VALUE rblapack_iwork;
integer *iwork;
VALUE rblapack_info;
integer info;
VALUE rblapack___out__;
doublereal __out__;
integer ldab;
integer n;
integer ldafb;
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.dla_gbrcond( trans, kl, ku, ab, afb, ipiv, cmode, c, work, iwork, [:usage => usage, :help => help])\n\n\nFORTRAN MANUAL\n DOUBLE PRECISION FUNCTION DLA_GBRCOND( TRANS, N, KL, KU, AB, LDAB, AFB, LDAFB, IPIV, CMODE, C, INFO, WORK, IWORK )\n\n* Purpose\n* =======\n*\n* DLA_GBRCOND Estimates the Skeel condition number of op(A) * op2(C)\n* where op2 is determined by CMODE as follows\n* CMODE = 1 op2(C) = C\n* CMODE = 0 op2(C) = I\n* CMODE = -1 op2(C) = inv(C)\n* The Skeel condition number cond(A) = norminf( |inv(A)||A| )\n* is computed by computing scaling factors R such that\n* diag(R)*A*op2(C) is row equilibrated and computing the standard\n* infinity-norm condition number.\n*\n\n* Arguments\n* =========\n*\n* TRANS (input) CHARACTER*1\n* Specifies the form of the system of equations:\n* = 'N': A * X = B (No transpose)\n* = 'T': A**T * X = B (Transpose)\n* = 'C': A**H * X = B (Conjugate Transpose = Transpose)\n*\n* N (input) INTEGER\n* The number of linear equations, i.e., the order of the\n* matrix A. N >= 0.\n*\n* KL (input) INTEGER\n* The number of subdiagonals within the band of A. KL >= 0.\n*\n* KU (input) INTEGER\n* The number of superdiagonals within the band of A. KU >= 0.\n*\n* AB (input) DOUBLE PRECISION array, dimension (LDAB,N)\n* On entry, the matrix A in band storage, in rows 1 to KL+KU+1.\n* The j-th column of A is stored in the j-th column of the\n* array AB as follows:\n* AB(KU+1+i-j,j) = A(i,j) for max(1,j-KU)<=i<=min(N,j+kl)\n*\n* LDAB (input) INTEGER\n* The leading dimension of the array AB. LDAB >= KL+KU+1.\n*\n* AFB (input) DOUBLE PRECISION array, dimension (LDAFB,N)\n* Details of the LU factorization of the band matrix A, as\n* computed by DGBTRF. U is stored as an upper triangular\n* band matrix with KL+KU superdiagonals in rows 1 to KL+KU+1,\n* and the multipliers used during the factorization are stored\n* in rows KL+KU+2 to 2*KL+KU+1.\n*\n* LDAFB (input) INTEGER\n* The leading dimension of the array AFB. LDAFB >= 2*KL+KU+1.\n*\n* IPIV (input) INTEGER array, dimension (N)\n* The pivot indices from the factorization A = P*L*U\n* as computed by DGBTRF; row i of the matrix was interchanged\n* with row IPIV(i).\n*\n* CMODE (input) INTEGER\n* Determines op2(C) in the formula op(A) * op2(C) as follows:\n* CMODE = 1 op2(C) = C\n* CMODE = 0 op2(C) = I\n* CMODE = -1 op2(C) = inv(C)\n*\n* C (input) DOUBLE PRECISION array, dimension (N)\n* The vector C in the formula op(A) * op2(C).\n*\n* INFO (output) INTEGER\n* = 0: Successful exit.\n* i > 0: The ith argument is invalid.\n*\n* WORK (input) DOUBLE PRECISION array, dimension (5*N).\n* Workspace.\n*\n* IWORK (input) INTEGER array, dimension (N).\n* Workspace.\n*\n\n* =====================================================================\n*\n* .. Local Scalars ..\n LOGICAL NOTRANS\n INTEGER KASE, I, J, KD, KE\n DOUBLE PRECISION AINVNM, TMP\n* ..\n* .. Local Arrays ..\n INTEGER ISAVE( 3 )\n* ..\n* .. External Functions ..\n LOGICAL LSAME\n EXTERNAL LSAME\n* ..\n* .. External Subroutines ..\n EXTERNAL DLACN2, DGBTRS, XERBLA\n* ..\n* .. Intrinsic Functions ..\n INTRINSIC ABS, MAX\n* ..\n\n");
return Qnil;
}
if (rb_hash_aref(rblapack_options, sUsage) == Qtrue) {
printf("%s\n", "USAGE:\n info, __out__ = NumRu::Lapack.dla_gbrcond( trans, kl, ku, ab, afb, ipiv, cmode, c, work, iwork, [:usage => usage, :help => help])\n");
return Qnil;
}
} else
rblapack_options = Qnil;
if (argc != 10 && argc != 10)
rb_raise(rb_eArgError,"wrong number of arguments (%d for 10)", argc);
rblapack_trans = argv[0];
rblapack_kl = argv[1];
rblapack_ku = argv[2];
rblapack_ab = argv[3];
rblapack_afb = argv[4];
rblapack_ipiv = argv[5];
rblapack_cmode = argv[6];
rblapack_c = argv[7];
rblapack_work = argv[8];
rblapack_iwork = argv[9];
if (argc == 10) {
} else if (rblapack_options != Qnil) {
} else {
}
trans = StringValueCStr(rblapack_trans)[0];
ku = NUM2INT(rblapack_ku);
if (!NA_IsNArray(rblapack_afb))
rb_raise(rb_eArgError, "afb (5th argument) must be NArray");
if (NA_RANK(rblapack_afb) != 2)
rb_raise(rb_eArgError, "rank of afb (5th argument) must be %d", 2);
ldafb = NA_SHAPE0(rblapack_afb);
n = NA_SHAPE1(rblapack_afb);
if (NA_TYPE(rblapack_afb) != NA_DFLOAT)
rblapack_afb = na_change_type(rblapack_afb, NA_DFLOAT);
afb = NA_PTR_TYPE(rblapack_afb, doublereal*);
cmode = NUM2INT(rblapack_cmode);
if (!NA_IsNArray(rblapack_iwork))
rb_raise(rb_eArgError, "iwork (10th argument) must be NArray");
if (NA_RANK(rblapack_iwork) != 1)
rb_raise(rb_eArgError, "rank of iwork (10th argument) must be %d", 1);
if (NA_SHAPE0(rblapack_iwork) != n)
rb_raise(rb_eRuntimeError, "shape 0 of iwork must be the same as shape 1 of afb");
if (NA_TYPE(rblapack_iwork) != NA_LINT)
rblapack_iwork = na_change_type(rblapack_iwork, NA_LINT);
iwork = NA_PTR_TYPE(rblapack_iwork, integer*);
kl = NUM2INT(rblapack_kl);
if (!NA_IsNArray(rblapack_ipiv))
rb_raise(rb_eArgError, "ipiv (6th argument) must be NArray");
if (NA_RANK(rblapack_ipiv) != 1)
rb_raise(rb_eArgError, "rank of ipiv (6th 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 afb");
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_ab))
rb_raise(rb_eArgError, "ab (4th argument) must be NArray");
if (NA_RANK(rblapack_ab) != 2)
rb_raise(rb_eArgError, "rank of ab (4th argument) must be %d", 2);
ldab = NA_SHAPE0(rblapack_ab);
if (NA_SHAPE1(rblapack_ab) != n)
rb_raise(rb_eRuntimeError, "shape 1 of ab must be the same as shape 1 of afb");
if (NA_TYPE(rblapack_ab) != NA_DFLOAT)
rblapack_ab = na_change_type(rblapack_ab, NA_DFLOAT);
ab = NA_PTR_TYPE(rblapack_ab, doublereal*);
if (!NA_IsNArray(rblapack_c))
rb_raise(rb_eArgError, "c (8th argument) must be NArray");
if (NA_RANK(rblapack_c) != 1)
rb_raise(rb_eArgError, "rank of c (8th 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 afb");
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_work))
rb_raise(rb_eArgError, "work (9th argument) must be NArray");
if (NA_RANK(rblapack_work) != 1)
rb_raise(rb_eArgError, "rank of work (9th argument) must be %d", 1);
if (NA_SHAPE0(rblapack_work) != (5*n))
rb_raise(rb_eRuntimeError, "shape 0 of work must be %d", 5*n);
if (NA_TYPE(rblapack_work) != NA_DFLOAT)
rblapack_work = na_change_type(rblapack_work, NA_DFLOAT);
work = NA_PTR_TYPE(rblapack_work, doublereal*);
__out__ = dla_gbrcond_(&trans, &n, &kl, &ku, ab, &ldab, afb, &ldafb, ipiv, &cmode, c, &info, work, iwork);
rblapack_info = INT2NUM(info);
rblapack___out__ = rb_float_new((double)__out__);
return rb_ary_new3(2, rblapack_info, rblapack___out__);
}
void
init_lapack_dla_gbrcond(VALUE mLapack, VALUE sH, VALUE sU, VALUE zero){
sHelp = sH;
sUsage = sU;
rblapack_ZERO = zero;
rb_define_module_function(mLapack, "dla_gbrcond", rblapack_dla_gbrcond, -1);
}
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