2 '\" Copyright (c) 1996-1997 Sun Microsystems, Inc.
4 '\" See the file "license.terms" for information on usage and redistribution
5 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
7 '\" RCS: @(#) $Id: DoubleObj.3,v 1.2 1998/09/14 18:39:48 stanton Exp $
9 '\" The definitions below are for supplemental macros used in Tcl/Tk
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
55 '\" options follow on successive lines, in four columns separated
59 '\" End of list of standard options for a Tk widget.
61 '\" .OP cmdName dbName dbClass
62 '\" Start of description of a specific option. cmdName gives the
63 '\" option's name as specified in the class command, dbName gives
64 '\" the option's name in the option database, and dbClass gives
65 '\" the option's class in the option database.
68 '\" Print arg1 underlined, then print arg2 normally.
70 '\" RCS: @(#) $Id: man.macros,v 1.3 1999/04/16 00:46:35 stanton Exp $
72 '\" # Set up traps and other miscellaneous stuff for Tcl/Tk man pages.
76 '\" # Start an argument description
80 . ie !"\\$2"" .TP \\n()Cu
85 \&\\$1 \\fI\\$2\\fP (\\$3)
98 '\" # define tabbing values for .AP
101 .if !"\\$1"" .nr )A \\w'\\$1'u+3n
104 .if !"\\$2"" .nr )B \\w'\\$2'u+\\n()Au+3n
105 .nr )C \\n()Bu+\\w'(in/out)'u+2n
107 .AS Tcl_Interp Tcl_CreateInterp in/out
108 '\" # BS - start boxed text
109 '\" # ^y = starting y location
117 .if n \l'\\n(.lu\(ul'
120 '\" # BE - end boxed text (draw box now)
125 .ie n \l'\\n(^lu\(ul'
127 .\" Draw four-sided box normally, but don't draw top of
128 .\" box if the box started on an earlier page.
130 \h'-1.5n'\L'|\\n(^yu-1v'\l'\\n(^lu+3n\(ul'\L'\\n(^tu+1v-\\n(^yu'\l'|0u-1.5n\(ul'
133 \h'-1.5n'\L'|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\l'|0u-1.5n\(ul'
140 '\" # VS - start vertical sidebar
141 '\" # ^Y = starting y location
142 '\" # ^v = 1 (for troff; for nroff this doesn't matter)
146 .ie n 'mc \s12\(br\s0
149 '\" # VE - end of vertical sidebar
157 \h'|\\n(^lu+3n'\L'|\\n(^Yu-1v\(bv'\v'\\n(^tu+1v-\\n(^Yu'\h'-|\\n(^lu+3n'
164 '\" # Special macro to handle page bottom: finish off current
165 '\" # box/sidebar if in box/sidebar mode, then invoked standard
166 '\" # page bottom macro.
173 .\" Draw three-sided box if this is the box's first page,
174 .\" draw two sides but no top otherwise.
175 .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
176 .el \h'-1.5n'\L'|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\h'|0u'\c
179 .nr ^x \\n(^tu+1v-\\n(^Yu
180 \kx\h'-\\nxu'\h'|\\n(^lu+3n'\ky\L'-\\n(^xu'\v'\\n(^xu'\h'|0u'\c
193 '\" # DS - begin display
199 '\" # DE - end display
205 '\" # SO - start of list of standard options
207 .SH "STANDARD OPTIONS"
213 '\" # SE - end of list of standard options
218 See the \\fBoptions\\fR manual entry for details on the standard options.
220 '\" # OP - start of full description for a single option
225 Command-Line Name: \\fB\\$1\\fR
226 Database Name: \\fB\\$2\\fR
227 Database Class: \\fB\\$3\\fR
231 '\" # CS - begin code excerpt
237 '\" # CE - end code excerpt
245 .TH Tcl_DoubleObj 3 8.0 Tcl "Tcl Library Procedures"
248 Tcl_NewDoubleObj, Tcl_SetDoubleObj, Tcl_GetDoubleFromObj \- manipulate Tcl objects as floating-point values
251 \fB#include <tcl.h>\fR
254 \fBTcl_NewDoubleObj\fR(\fIdoubleValue\fR)
256 \fBTcl_SetDoubleObj\fR(\fIobjPtr, doubleValue\fR)
259 \fBTcl_GetDoubleFromObj\fR(\fIinterp, objPtr, doublePtr\fR)
261 .AS Tcl_Interp doubleValue in/out
262 .AP double doubleValue in
263 A double-precision floating point value used to initialize or set a double object.
264 .AP Tcl_Obj *objPtr in/out
265 For \fBTcl_SetDoubleObj\fR, this points to the object to be converted
267 For \fBTcl_GetDoubleFromObj\fR, this refers to the object
268 from which to get a double value;
269 if \fIobjPtr\fR does not already point to a double object,
270 an attempt will be made to convert it to one.
271 .AP Tcl_Interp *interp in/out
272 If an error occurs during conversion,
273 an error message is left in the interpreter's result object
274 unless \fIinterp\fR is NULL.
275 .AP double *doublePtr out
276 Points to place to store the double value
277 obtained from \fIobjPtr\fR.
282 These procedures are used to create, modify, and read
283 double Tcl objects from C code.
284 \fBTcl_NewDoubleObj\fR and \fBTcl_SetDoubleObj\fR
285 will create a new object of double type
286 or modify an existing object to have double type.
287 Both of these procedures set the object to have the
288 double-precision floating point value given by \fIdoubleValue\fR;
289 \fBTcl_NewDoubleObj\fR returns a pointer to a newly created object
290 with reference count zero.
291 Both procedures set the object's type to be double
292 and assign the double value to the object's internal representation
293 \fIdoubleValue\fR member.
294 \fBTcl_SetDoubleObj\fR invalidates any old string representation
295 and, if the object is not already a double object,
296 frees any old internal representation.
298 \fBTcl_GetDoubleFromObj\fR attempts to return a double value
299 from the Tcl object \fIobjPtr\fR.
300 If the object is not already a double object,
301 it will attempt to convert it to one.
302 If an error occurs during conversion, it returns \fBTCL_ERROR\fR
303 and leaves an error message in the interpreter's result object
304 unless \fIinterp\fR is NULL.
305 Otherwise, it returns \fBTCL_OK\fR and stores the double value
306 in the address given by \fIdoublePtr\fR.
307 If the object is not already a double object,
308 the conversion will free any old internal representation.
311 Tcl_NewObj, Tcl_DecrRefCount, Tcl_IncrRefCount, Tcl_GetObjResult
314 double, double object, double type, internal representation, object, object type, string representation