1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
#include "rb_lapack.h"
extern real clangt_(char* norm, integer* n, complex* dl, complex* d, complex* du);
static VALUE
rblapack_clangt(int argc, VALUE *argv, VALUE self){
VALUE rblapack_norm;
char norm;
VALUE rblapack_dl;
complex *dl;
VALUE rblapack_d;
complex *d;
VALUE rblapack_du;
complex *du;
VALUE rblapack___out__;
real __out__;
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 __out__ = NumRu::Lapack.clangt( norm, dl, d, du, [:usage => usage, :help => help])\n\n\nFORTRAN MANUAL\n REAL FUNCTION CLANGT( NORM, N, DL, D, DU )\n\n* Purpose\n* =======\n*\n* CLANGT returns the value of the one norm, or the Frobenius norm, or\n* the infinity norm, or the element of largest absolute value of a\n* complex tridiagonal matrix A.\n*\n* Description\n* ===========\n*\n* CLANGT returns the value\n*\n* CLANGT = ( max(abs(A(i,j))), NORM = 'M' or 'm'\n* (\n* ( norm1(A), NORM = '1', 'O' or 'o'\n* (\n* ( normI(A), NORM = 'I' or 'i'\n* (\n* ( normF(A), NORM = 'F', 'f', 'E' or 'e'\n*\n* where norm1 denotes the one norm of a matrix (maximum column sum),\n* normI denotes the infinity norm of a matrix (maximum row sum) and\n* normF denotes the Frobenius norm of a matrix (square root of sum of\n* squares). Note that max(abs(A(i,j))) is not a consistent matrix norm.\n*\n\n* Arguments\n* =========\n*\n* NORM (input) CHARACTER*1\n* Specifies the value to be returned in CLANGT as described\n* above.\n*\n* N (input) INTEGER\n* The order of the matrix A. N >= 0. When N = 0, CLANGT is\n* set to zero.\n*\n* DL (input) COMPLEX array, dimension (N-1)\n* The (n-1) sub-diagonal elements of A.\n*\n* D (input) COMPLEX array, dimension (N)\n* The diagonal elements of A.\n*\n* DU (input) COMPLEX array, dimension (N-1)\n* The (n-1) super-diagonal elements of A.\n*\n\n* =====================================================================\n*\n\n");
return Qnil;
}
if (rb_hash_aref(rblapack_options, sUsage) == Qtrue) {
printf("%s\n", "USAGE:\n __out__ = NumRu::Lapack.clangt( norm, dl, d, du, [: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_norm = argv[0];
rblapack_dl = argv[1];
rblapack_d = argv[2];
rblapack_du = argv[3];
if (argc == 4) {
} else if (rblapack_options != Qnil) {
} else {
}
norm = StringValueCStr(rblapack_norm)[0];
if (!NA_IsNArray(rblapack_d))
rb_raise(rb_eArgError, "d (3th argument) must be NArray");
if (NA_RANK(rblapack_d) != 1)
rb_raise(rb_eArgError, "rank of d (3th argument) must be %d", 1);
n = NA_SHAPE0(rblapack_d);
if (NA_TYPE(rblapack_d) != NA_SCOMPLEX)
rblapack_d = na_change_type(rblapack_d, NA_SCOMPLEX);
d = NA_PTR_TYPE(rblapack_d, complex*);
if (!NA_IsNArray(rblapack_dl))
rb_raise(rb_eArgError, "dl (2th argument) must be NArray");
if (NA_RANK(rblapack_dl) != 1)
rb_raise(rb_eArgError, "rank of dl (2th argument) must be %d", 1);
if (NA_SHAPE0(rblapack_dl) != (n-1))
rb_raise(rb_eRuntimeError, "shape 0 of dl must be %d", n-1);
if (NA_TYPE(rblapack_dl) != NA_SCOMPLEX)
rblapack_dl = na_change_type(rblapack_dl, NA_SCOMPLEX);
dl = NA_PTR_TYPE(rblapack_dl, complex*);
if (!NA_IsNArray(rblapack_du))
rb_raise(rb_eArgError, "du (4th argument) must be NArray");
if (NA_RANK(rblapack_du) != 1)
rb_raise(rb_eArgError, "rank of du (4th argument) must be %d", 1);
if (NA_SHAPE0(rblapack_du) != (n-1))
rb_raise(rb_eRuntimeError, "shape 0 of du must be %d", n-1);
if (NA_TYPE(rblapack_du) != NA_SCOMPLEX)
rblapack_du = na_change_type(rblapack_du, NA_SCOMPLEX);
du = NA_PTR_TYPE(rblapack_du, complex*);
__out__ = clangt_(&norm, &n, dl, d, du);
rblapack___out__ = rb_float_new((double)__out__);
return rblapack___out__;
}
void
init_lapack_clangt(VALUE mLapack, VALUE sH, VALUE sU, VALUE zero){
sHelp = sH;
sUsage = sU;
rblapack_ZERO = zero;
rb_define_module_function(mLapack, "clangt", rblapack_clangt, -1);
}
|
