| 1 | '\" |
| 2 | '\" Copyright (c) 1989-1993 The Regents of the University of California. |
| 3 | '\" Copyright (c) 1994-1996 Sun Microsystems, Inc. |
| 4 | '\" |
| 5 | '\" See the file "license.terms" for information on usage and redistribution |
| 6 | '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
| 7 | '\" |
| 8 | '\" RCS: @(#) $Id: GetInt.3,v 1.4 2001/09/25 16:23:55 dgp Exp $ |
| 9 | '\" |
| 10 | '\" The definitions below are for supplemental macros used in Tcl/Tk |
| 11 | '\" manual entries. |
| 12 | '\" |
| 13 | '\" .AP type name in/out ?indent? |
| 14 | '\" Start paragraph describing an argument to a library procedure. |
| 15 | '\" type is type of argument (int, etc.), in/out is either "in", "out", |
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| 18 | '\" needed; use .AS below instead) |
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| 20 | '\" .AS ?type? ?name? |
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| 38 | '\" .VS ?version? ?br? |
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| 40 | '\" of man pages. The first argument is ignored and used for recording |
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| 61 | '\" |
| 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 |
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| 71 | '\" RCS: @(#) $Id: man.macros,v 1.4 2000/08/25 06:18:32 ericm Exp $ |
| 72 | '\" |
| 73 | '\" # Set up traps and other miscellaneous stuff for Tcl/Tk man pages. |
| 74 | .if t .wh -1.3i ^B |
| 75 | .nr ^l \n(.l |
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| 77 | '\" # Start an argument description |
| 78 | .de AP |
| 79 | .ie !"\\$4"" .TP \\$4 |
| 80 | .el \{\ |
| 81 | . ie !"\\$2"" .TP \\n()Cu |
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| 108 | .AS Tcl_Interp Tcl_CreateInterp in/out |
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| 134 | \h'-1.5n'\L'|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\l'|0u-1.5n\(ul' |
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| 177 | .el \h'-1.5n'\L'|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\h'|0u'\c |
| 178 | .\} |
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| 180 | .nr ^x \\n(^tu+1v-\\n(^Yu |
| 181 | \kx\h'-\\nxu'\h'|\\n(^lu+3n'\ky\L'-\\n(^xu'\v'\\n(^xu'\h'|0u'\c |
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| 206 | '\" # SO - start of list of standard options |
| 207 | .de SO |
| 208 | .SH "STANDARD OPTIONS" |
| 209 | .LP |
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| 211 | .ta 5.5c 11c |
| 212 | .ft B |
| 213 | .. |
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| 217 | .ft R |
| 218 | .LP |
| 219 | See the \\fBoptions\\fR manual entry for details on the standard options. |
| 220 | .. |
| 221 | '\" # OP - start of full description for a single option |
| 222 | .de OP |
| 223 | .LP |
| 224 | .nf |
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| 226 | Command-Line Name: \\fB\\$1\\fR |
| 227 | Database Name: \\fB\\$2\\fR |
| 228 | Database Class: \\fB\\$3\\fR |
| 229 | .fi |
| 230 | .IP |
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| 243 | .de UL |
| 244 | \\$1\l'|0\(ul'\\$2 |
| 245 | .. |
| 246 | .TH Tcl_GetInt 3 "" Tcl "Tcl Library Procedures" |
| 247 | .BS |
| 248 | .SH NAME |
| 249 | Tcl_GetInt, Tcl_GetDouble, Tcl_GetBoolean \- convert from string to integer, double, or boolean |
| 250 | .SH SYNOPSIS |
| 251 | .nf |
| 252 | \fB#include <tcl.h>\fR |
| 253 | .sp |
| 254 | int |
| 255 | \fBTcl_GetInt\fR(\fIinterp, string, intPtr\fR) |
| 256 | .sp |
| 257 | int |
| 258 | \fBTcl_GetDouble\fR(\fIinterp, string, doublePtr\fR) |
| 259 | .sp |
| 260 | int |
| 261 | \fBTcl_GetBoolean\fR(\fIinterp, string, boolPtr\fR) |
| 262 | .SH ARGUMENTS |
| 263 | .AS Tcl_Interp *doublePtr |
| 264 | .AP Tcl_Interp *interp in |
| 265 | Interpreter to use for error reporting. |
| 266 | .AP "CONST char" *string in |
| 267 | Textual value to be converted. |
| 268 | .AP int *intPtr out |
| 269 | Points to place to store integer value converted from \fIstring\fR. |
| 270 | .AP double *doublePtr out |
| 271 | Points to place to store double-precision floating-point |
| 272 | value converted from \fIstring\fR. |
| 273 | .AP int *boolPtr out |
| 274 | Points to place to store boolean value (0 or 1) converted from \fIstring\fR. |
| 275 | .BE |
| 276 | |
| 277 | .SH DESCRIPTION |
| 278 | .PP |
| 279 | These procedures convert from strings to integers or double-precision |
| 280 | floating-point values or booleans (represented as 0- or 1-valued |
| 281 | integers). Each of the procedures takes a \fIstring\fR argument, |
| 282 | converts it to an internal form of a particular type, and stores |
| 283 | the converted value at the location indicated by the procedure's |
| 284 | third argument. If all goes well, each of the procedures returns |
| 285 | TCL_OK. If \fIstring\fR doesn't have the proper syntax for the |
| 286 | desired type then TCL_ERROR is returned, an error message is left |
| 287 | in the interpreter's result, and nothing is stored at *\fIintPtr\fR |
| 288 | or *\fIdoublePtr\fR or *\fIboolPtr\fR. |
| 289 | .PP |
| 290 | \fBTcl_GetInt\fR expects \fIstring\fR to consist of a collection |
| 291 | of integer digits, optionally signed and optionally preceded by |
| 292 | white space. If the first two characters of \fIstring\fR are ``0x'' |
| 293 | then \fIstring\fR is expected to be in hexadecimal form; otherwise, |
| 294 | if the first character of \fIstring\fR is ``0'' then \fIstring\fR |
| 295 | is expected to be in octal form; otherwise, \fIstring\fR is |
| 296 | expected to be in decimal form. |
| 297 | .PP |
| 298 | \fBTcl_GetDouble\fR expects \fIstring\fR to consist of a floating-point |
| 299 | number, which is: white space; a sign; a sequence of digits; a |
| 300 | decimal point; a sequence of digits; the letter ``e''; and a |
| 301 | signed decimal exponent. Any of the fields may be omitted, except that |
| 302 | the digits either before or after the decimal point must be present |
| 303 | and if the ``e'' is present then it must be followed by the |
| 304 | exponent number. |
| 305 | .PP |
| 306 | \fBTcl_GetBoolean\fR expects \fIstring\fR to specify a boolean |
| 307 | value. If \fIstring\fR is any of \fB0\fR, \fBfalse\fR, |
| 308 | \fBno\fR, or \fBoff\fR, then \fBTcl_GetBoolean\fR stores a zero |
| 309 | value at \fI*boolPtr\fR. |
| 310 | If \fIstring\fR is any of \fB1\fR, \fBtrue\fR, \fByes\fR, or \fBon\fR, |
| 311 | then 1 is stored at \fI*boolPtr\fR. |
| 312 | Any of these values may be abbreviated, and upper-case spellings |
| 313 | are also acceptable. |
| 314 | |
| 315 | .SH KEYWORDS |
| 316 | boolean, conversion, double, floating-point, integer |