dirfile_madd_linterp(3)

1dirfile_madd_bit(3)                 GETDATA                dirfile_madd_bit(3)
2
3
4

NAME

6       dirfile_madd_bit,       dirfile_madd_clincom,       dirfile_madd_const,
7       dirfile_madd_cpolynom,    dirfile_madd_lincom,    dirfile_madd_linterp,
8       dirfile_madd_multiply,     dirfile_madd_phase,    dirfile_madd_polynom,
9       dirfile_madd_bit, dirfile_madd_string — add a field to a dirfile
10

SYNOPSIS

12       #include <getdata.h>
13
14       int dirfile_madd_bit(DIRFILE *dirfile, const char *parent, const char
15              *field_name, const char *in_field, gd_bit_t bitnum, gd_bit_t
16              numbits);
17
18       int dirfile_madd_clincom(DIRFILE *dirfile, const char *parent, const
19              char *field_name, int n_fields, const char **in_fields, const
20              double complex *cm, const double complex *cb);
21
22       int dirfile_madd_const(DIRFILE *dirfile, const char *parent, const char
23              *field_name, gd_type_t const_type, gd_type_t data_type, void
24              *value);
25
26       int dirfile_madd_cpolynom(DIRFILE *dirfile, const char *parent, const
27              char *field_name, int poly_ord, const char *in_field, const
28              double complex *ca);
29
30       int dirfile_madd_lincom(DIRFILE *dirfile, const char *parent, const
31              char *field_name, int n_fields, const char **in_fields, const
32              double *m, const double *b);
33
34       int dirfile_madd_linterp(DIRFILE *dirfile, const char *parent, const
35              char *field_name, const char *in_field, const char *table);
36
37       int dirfile_madd_multiply(DIRFILE *dirfile, const char *parent, const
38              char *field_name,  const char *in_field1, const char
39              *in_field2);
40
41       int dirfile_madd_polynom(DIRFILE *dirfile, const char *parent, const
42              char *field_name, int poly_ord, const char *in_field, const
43              double *a);
44
45       int dirfile_madd_phase(DIRFILE *dirfile, const char *parent, const char
46              *field_name, const char *in_field, gd_shift_t shift);
47
48       int dirfile_madd_sbit(DIRFILE *dirfile, const char *parent, const char
49              *field_name, const char *in_field, gd_bit_t bitnum, gd_bit_t
50              numbits);
51
52       int dirfile_madd_string(DIRFILE *dirfile, const char *parent, const
53              char *field_name, const char *value);
54

DESCRIPTION

56       These  functions provide alternatives to using the dirfile_madd() func‐
57       tion to add a new metafield of the  indicated  type  under  the  parent
58       field given by parent in the dirfile specified by dirfile.
59
60       In all of these calls, field_name indicates the name of the field to be
61       added.  It should not be  the  full  <parent-field>/<meta-field>  field
62       code.   The  meaning and valid types of other arguments may be obtained
63       from the get_entry(3) and dirfile-format(5) manual pages.
64
65       The dirfile_madd_clincom() and  dirfile_madd_cpolynom()  functions  are
66       identical  to  dirfile_madd_lincom() and dirfile_madd_polynom(), except
67       they take complex scalar parameters, instead of purely real values.
68
69       The dirfile_madd_lincom()  and  dirfile_madd_clincom()  functions  take
70       pointers  to three arrays of length n_fields containing the input field
71       names (in_fields), the gain factors (m or cm), and the offset terms  (b
72       or  cb).  Similarly, dirfile_madd_polynom() and dirfile_madd_cpolynom()
73       take an array of length poly_ord + 1 containing the polynomial co-effi‐
74       cients (a or ca).
75
76       The  dirfile_madd_string()  and dirfile_madd_const() functions both add
77       the  field  and  set  the  value  of   the   field   to   value.    For
78       dirfile_madd_const(),  the  const_type  argument  specifies the storage
79       type for the const, while data_type specifies the data type of the val‐
80       ue pointed to by value.
81
82       The gd_bit_t type is a signed 16-bit integer type.  The gd_shift_t type
83       is a signed 64-bit integer type.
84
85       All fields added with this interface must contain numerical parameters.
86       Fields with CONST fields as parameters cannot be added with these func‐
87       tions.   Those  fields  must   be   added   with   dirfile_madd(3)   or
88       dirfile_madd_spec(3).
89
90       See  NOTES  below  for  information on using dirfile_madd_clincom() and
91       dirfile_madd_cpolynom() in the C89 GetData API.
92
93

RETURN VALUE

95       On success, any of these functions returns zero.   On error, -1 is  re‐
96       turned  and the dirfile error is set to a non-zero error value.  Possi‐
97       ble error values are:
98
99       GD_E_ACCMODE
100               The specified dirfile was opened read-only.
101
102       GD_E_ALLOC
103               The library was unable to allocate memory.
104
105       GD_E_BAD_CODE
106               The field_name argument contained  invalid  characters.  Alter‐
107               nately,  the  parent field code was not found, or was already a
108               metafield.
109
110       GD_E_BAD_DIRFILE
111               The supplied dirfile was invalid.
112
113       GD_E_BAD_ENTRY
114               One or more of the field parameters specified was invalid.
115
116       GD_E_BAD_TYPE
117               The   data_type   or   const_type    argument    provided    to
118               dirfile_madd_const(), was invalid.
119
120       GD_E_DUPLICATE
121               The  field_name provided duplicated that of an already existing
122               field.
123
124       GD_E_PROTECTED
125               The metadata of the fragment was protected from change.
126
127       The dirfile error may be retrieved by calling get_error(3).  A descrip‐
128       tive error string for the last error encountered can be obtained from a
129       call to get_error_string(3).
130
131

NOTES

133       The   C89   GetData   API    provides    different    prototypes    for
134       dirfile_madd_clincom() and dirfile_madd_cpolynom():
135
136       #define GETDATA_C89_API
137       #include <getdata.h>
138
139       int dirfile_madd_clincom(DIRFILE *dirfile, const char *parent,
140              const char *field_name, int n_fields, const char **in_fields,
141              const double *cm, const double *cb);
142
143       int dirfile_madd_cpolynom(DIRFILE *dirfile, const char *parent,
144              const char *field_name, int poly_ord, const char *in_field,
145              const double *ca);
146
147       In  this  case,  the  array pointers passed as cm, cb or ca should have
148       twice as many (purely real) elements, consisting  of  alternating  real
149       and imaginary parts for the complex data.  For example, ca[0] should be
150       the real part of the first co-efficient, ca[1] the  imaginary  part  of
151       the first co-efficient, ca[2] the real part of the second co-efficient,
152       ca[3] the imaginary part of the second co-efficient, and so on.
153
154

NAME

SYNOPSIS

DESCRIPTION

RETURN VALUE

NOTES

SEE ALSO