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Diffstat (limited to 'doc/GetInt.3')
| -rw-r--r-- | doc/GetInt.3 | 78 |
1 files changed, 49 insertions, 29 deletions
diff --git a/doc/GetInt.3 b/doc/GetInt.3 index 70537a9..5a3304a 100644 --- a/doc/GetInt.3 +++ b/doc/GetInt.3 @@ -4,11 +4,9 @@ '\" '\" See the file "license.terms" for information on usage and redistribution '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES. -'\" -'\" RCS: @(#) $Id: GetInt.3,v 1.4 2001/09/25 16:23:55 dgp Exp $ -'\" -.so man.macros +'\" .TH Tcl_GetInt 3 "" Tcl "Tcl Library Procedures" +.so man.macros .BS .SH NAME Tcl_GetInt, Tcl_GetDouble, Tcl_GetBoolean \- convert from string to integer, double, or boolean @@ -17,62 +15,84 @@ Tcl_GetInt, Tcl_GetDouble, Tcl_GetBoolean \- convert from string to integer, dou \fB#include <tcl.h>\fR .sp int -\fBTcl_GetInt\fR(\fIinterp, string, intPtr\fR) +\fBTcl_GetInt\fR(\fIinterp, src, intPtr\fR) .sp int -\fBTcl_GetDouble\fR(\fIinterp, string, doublePtr\fR) +\fBTcl_GetDouble\fR(\fIinterp, src, doublePtr\fR) .sp int -\fBTcl_GetBoolean\fR(\fIinterp, string, boolPtr\fR) +\fBTcl_GetBoolean\fR(\fIinterp, src, boolPtr\fR) .SH ARGUMENTS -.AS Tcl_Interp *doublePtr +.AS Tcl_Interp *doublePtr out .AP Tcl_Interp *interp in Interpreter to use for error reporting. -.AP "CONST char" *string in +.AP "const char" *src in Textual value to be converted. .AP int *intPtr out -Points to place to store integer value converted from \fIstring\fR. +Points to place to store integer value converted from \fIsrc\fR. .AP double *doublePtr out Points to place to store double-precision floating-point -value converted from \fIstring\fR. +value converted from \fIsrc\fR. .AP int *boolPtr out -Points to place to store boolean value (0 or 1) converted from \fIstring\fR. +Points to place to store boolean value (0 or 1) converted from \fIsrc\fR. .BE .SH DESCRIPTION .PP These procedures convert from strings to integers or double-precision floating-point values or booleans (represented as 0- or 1-valued -integers). Each of the procedures takes a \fIstring\fR argument, +integers). Each of the procedures takes a \fIsrc\fR argument, converts it to an internal form of a particular type, and stores the converted value at the location indicated by the procedure's third argument. If all goes well, each of the procedures returns -TCL_OK. If \fIstring\fR doesn't have the proper syntax for the -desired type then TCL_ERROR is returned, an error message is left +\fBTCL_OK\fR. If \fIsrc\fR does not have the proper syntax for the +desired type then \fBTCL_ERROR\fR is returned, an error message is left in the interpreter's result, and nothing is stored at *\fIintPtr\fR or *\fIdoublePtr\fR or *\fIboolPtr\fR. .PP -\fBTcl_GetInt\fR expects \fIstring\fR to consist of a collection -of integer digits, optionally signed and optionally preceded by -white space. If the first two characters of \fIstring\fR are ``0x'' -then \fIstring\fR is expected to be in hexadecimal form; otherwise, -if the first character of \fIstring\fR is ``0'' then \fIstring\fR -is expected to be in octal form; otherwise, \fIstring\fR is +\fBTcl_GetInt\fR expects \fIsrc\fR to consist of a collection +of integer digits, optionally signed and optionally preceded and +followed by white space. If the first two characters of \fIsrc\fR +after the optional white space and sign are +.QW \fB0x\fR +then \fIsrc\fR is expected to be in hexadecimal form; otherwise, +if the first such characters are +.QW \fB0o\fR +then \fIsrc\fR is expected to be in octal form; otherwise, +if the first such characters are +.QW \fB0b\fR +then \fIsrc\fR is expected to be in binary form; otherwise, +if the first such character is +.QW \fB0\fR +then \fIsrc\fR +is expected to be in octal form; otherwise, \fIsrc\fR is expected to be in decimal form. .PP -\fBTcl_GetDouble\fR expects \fIstring\fR to consist of a floating-point +\fBTcl_GetDouble\fR expects \fIsrc\fR to consist of a floating-point number, which is: white space; a sign; a sequence of digits; a -decimal point; a sequence of digits; the letter ``e''; and a -signed decimal exponent. Any of the fields may be omitted, except that +decimal point +.QW \fB.\fR ; +a sequence of digits; the letter +.QW \fBe\fR ; +a signed decimal exponent; and more white space. +Any of the fields may be omitted, except that the digits either before or after the decimal point must be present -and if the ``e'' is present then it must be followed by the -exponent number. +and if the +.QW \fBe\fR +is present then it must be followed by the exponent number. If there +are no fields apart from the sign and initial sequence of digits +(i.e., no decimal point or exponent indicator), that +initial sequence of digits should take one of the forms that +\fBTcl_GetInt\fR supports, described above. The use of +.QW \fB,\fR +as a decimal point is not supported nor should any other sort of +inter-digit separator be present. .PP -\fBTcl_GetBoolean\fR expects \fIstring\fR to specify a boolean -value. If \fIstring\fR is any of \fB0\fR, \fBfalse\fR, +\fBTcl_GetBoolean\fR expects \fIsrc\fR to specify a boolean +value. If \fIsrc\fR is any of \fB0\fR, \fBfalse\fR, \fBno\fR, or \fBoff\fR, then \fBTcl_GetBoolean\fR stores a zero value at \fI*boolPtr\fR. -If \fIstring\fR is any of \fB1\fR, \fBtrue\fR, \fByes\fR, or \fBon\fR, +If \fIsrc\fR is any of \fB1\fR, \fBtrue\fR, \fByes\fR, or \fBon\fR, then 1 is stored at \fI*boolPtr\fR. Any of these values may be abbreviated, and upper-case spellings are also acceptable. |