2 '\" Copyright (c) 1989-1993 The Regents of the University of California.
3 '\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
5 '\" See the file "license.terms" for information on usage and redistribution
6 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
8 .TH Tcl_GetInt 3 "" Tcl "Tcl Library Procedures"
9 .\" The -*- nroff -*- definitions below are for supplemental macros used
10 .\" in Tcl/Tk manual entries.
12 .\" .AP type name in/out ?indent?
13 .\" Start paragraph describing an argument to a library procedure.
14 .\" type is type of argument (int, etc.), in/out is either "in", "out",
15 .\" or "in/out" to describe whether procedure reads or modifies arg,
16 .\" and indent is equivalent to second arg of .IP (shouldn't ever be
17 .\" needed; use .AS below instead)
20 .\" Give maximum sizes of arguments for setting tab stops. Type and
21 .\" name are examples of largest possible arguments that will be passed
22 .\" to .AP later. If args are omitted, default tab stops are used.
25 .\" Start box enclosure. From here until next .BE, everything will be
26 .\" enclosed in one large box.
29 .\" End of box enclosure.
32 .\" Begin code excerpt.
37 .\" .VS ?version? ?br?
38 .\" Begin vertical sidebar, for use in marking newly-changed parts
39 .\" of man pages. The first argument is ignored and used for recording
40 .\" the version when the .VS was added, so that the sidebars can be
41 .\" found and removed when they reach a certain age. If another argument
42 .\" is present, then a line break is forced before starting the sidebar.
45 .\" End of vertical sidebar.
48 .\" Begin an indented unfilled display.
51 .\" End of indented unfilled display.
54 .\" Start of list of standard options for a Tk widget. The manpage
55 .\" argument defines where to look up the standard options; if
56 .\" omitted, defaults to "options". The options follow on successive
57 .\" lines, in three columns separated by tabs.
60 .\" End of list of standard options for a Tk widget.
62 .\" .OP cmdName dbName dbClass
63 .\" Start of description of a specific option. cmdName gives the
64 .\" option's name as specified in the class command, dbName gives
65 .\" the option's name in the option database, and dbClass gives
66 .\" the option's class in the option database.
69 .\" Print arg1 underlined, then print arg2 normally.
72 .\" Print arg1 in quotes, then arg2 normally (for trailing punctuation).
75 .\" Print an open parenthesis, arg1 in quotes, then arg2 normally
76 .\" (for trailing punctuation) and then a closing parenthesis.
78 .\" # Set up traps and other miscellaneous stuff for Tcl/Tk man pages.
82 .\" # Start an argument description
86 . ie !"\\$2"" .TP \\n()Cu
91 \&\\$1 \\fI\\$2\\fP (\\$3)
104 .\" # define tabbing values for .AP
107 .if !"\\$1"" .nr )A \\w'\\$1'u+3n
110 .if !"\\$2"" .nr )B \\w'\\$2'u+\\n()Au+3n
111 .nr )C \\n()Bu+\\w'(in/out)'u+2n
113 .AS Tcl_Interp Tcl_CreateInterp in/out
114 .\" # BS - start boxed text
115 .\" # ^y = starting y location
123 .if n \l'\\n(.lu\(ul'
126 .\" # BE - end boxed text (draw box now)
131 .ie n \l'\\n(^lu\(ul'
133 .\" Draw four-sided box normally, but don't draw top of
134 .\" box if the box started on an earlier page.
136 \h'-1.5n'\L'|\\n(^yu-1v'\l'\\n(^lu+3n\(ul'\L'\\n(^tu+1v-\\n(^yu'\l'|0u-1.5n\(ul'
139 \h'-1.5n'\L'|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\l'|0u-1.5n\(ul'
146 .\" # VS - start vertical sidebar
147 .\" # ^Y = starting y location
148 .\" # ^v = 1 (for troff; for nroff this doesn't matter)
152 .ie n 'mc \s12\(br\s0
155 .\" # VE - end of vertical sidebar
163 \h'|\\n(^lu+3n'\L'|\\n(^Yu-1v\(bv'\v'\\n(^tu+1v-\\n(^Yu'\h'-|\\n(^lu+3n'
170 .\" # Special macro to handle page bottom: finish off current
171 .\" # box/sidebar if in box/sidebar mode, then invoked standard
172 .\" # page bottom macro.
179 .\" Draw three-sided box if this is the box's first page,
180 .\" draw two sides but no top otherwise.
181 .ie !\\n(^b-1 \h'-1.5n'\L'|\\n(^yu-1v'\l'\\n(^lu+3n\(ul'\L'\\n(^tu+1v-\\n(^yu'\h'|0u'\c
182 .el \h'-1.5n'\L'|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\h'|0u'\c
185 .nr ^x \\n(^tu+1v-\\n(^Yu
186 \kx\h'-\\nxu'\h'|\\n(^lu+3n'\ky\L'-\\n(^xu'\v'\\n(^xu'\h'|0u'\c
199 .\" # DS - begin display
205 .\" # DE - end display
211 .\" # SO - start of list of standard options
213 'ie '\\$1'' .ds So \\fBoptions\\fR
214 'el .ds So \\fB\\$1\\fR
215 .SH "STANDARD OPTIONS"
221 .\" # SE - end of list of standard options
226 See the \\*(So manual entry for details on the standard options.
228 .\" # OP - start of full description for a single option
233 Command-Line Name: \\fB\\$1\\fR
234 Database Name: \\fB\\$2\\fR
235 Database Class: \\fB\\$3\\fR
239 .\" # CS - begin code excerpt
245 .\" # CE - end code excerpt
250 .\" # UL - underline word
254 .\" # QW - apply quotation marks to word
256 .ie '\\*(lq'"' ``\\$1''\\$2
257 .\"" fix emacs highlighting
258 .el \\*(lq\\$1\\*(rq\\$2
260 .\" # PQ - apply parens and quotation marks to word
262 .ie '\\*(lq'"' (``\\$1''\\$2)\\$3
263 .\"" fix emacs highlighting
264 .el (\\*(lq\\$1\\*(rq\\$2)\\$3
266 .\" # QR - quoted range
268 .ie '\\*(lq'"' ``\\$1''\\-``\\$2''\\$3
269 .\"" fix emacs highlighting
270 .el \\*(lq\\$1\\*(rq\\-\\*(lq\\$2\\*(rq\\$3
272 .\" # MT - "empty" string
278 Tcl_GetInt, Tcl_GetDouble, Tcl_GetBoolean \- convert from string to integer, double, or boolean
281 \fB#include <tcl.h>\fR
284 \fBTcl_GetInt\fR(\fIinterp, src, intPtr\fR)
287 \fBTcl_GetDouble\fR(\fIinterp, src, doublePtr\fR)
290 \fBTcl_GetBoolean\fR(\fIinterp, src, boolPtr\fR)
292 .AS Tcl_Interp *doublePtr out
293 .AP Tcl_Interp *interp in
294 Interpreter to use for error reporting.
295 .AP "const char" *src in
296 Textual value to be converted.
298 Points to place to store integer value converted from \fIsrc\fR.
299 .AP double *doublePtr out
300 Points to place to store double-precision floating-point
301 value converted from \fIsrc\fR.
303 Points to place to store boolean value (0 or 1) converted from \fIsrc\fR.
308 These procedures convert from strings to integers or double-precision
309 floating-point values or booleans (represented as 0- or 1-valued
310 integers). Each of the procedures takes a \fIsrc\fR argument,
311 converts it to an internal form of a particular type, and stores
312 the converted value at the location indicated by the procedure's
313 third argument. If all goes well, each of the procedures returns
314 \fBTCL_OK\fR. If \fIsrc\fR does not have the proper syntax for the
315 desired type then \fBTCL_ERROR\fR is returned, an error message is left
316 in the interpreter's result, and nothing is stored at *\fIintPtr\fR
317 or *\fIdoublePtr\fR or *\fIboolPtr\fR.
319 \fBTcl_GetInt\fR expects \fIsrc\fR to consist of a collection
320 of integer digits, optionally signed and optionally preceded by
321 white space. If the first two characters of \fIsrc\fR
322 after the optional white space and sign are
324 then \fIsrc\fR is expected to be in hexadecimal form; otherwise,
325 if the first such character is
328 is expected to be in octal form; otherwise, \fIsrc\fR is
329 expected to be in decimal form.
331 \fBTcl_GetDouble\fR expects \fIsrc\fR to consist of a floating-point
332 number, which is: white space; a sign; a sequence of digits; a
333 decimal point; a sequence of digits; the letter
335 a signed decimal exponent; and more white space.
336 Any of the fields may be omitted, except that
337 the digits either before or after the decimal point must be present
340 is present then it must be followed by the exponent number.
342 \fBTcl_GetBoolean\fR expects \fIsrc\fR to specify a boolean
343 value. If \fIsrc\fR is any of \fB0\fR, \fBfalse\fR,
344 \fBno\fR, or \fBoff\fR, then \fBTcl_GetBoolean\fR stores a zero
345 value at \fI*boolPtr\fR.
346 If \fIsrc\fR is any of \fB1\fR, \fBtrue\fR, \fByes\fR, or \fBon\fR,
347 then 1 is stored at \fI*boolPtr\fR.
348 Any of these values may be abbreviated, and upper-case spellings
352 boolean, conversion, double, floating-point, integer