06-12-2007
porter, thank it's clear now except for one thing:
Why doesn't "\001\000\000\000" get stored as a string like { '\', '0', '0', '1', '\', '0', '0', '0', '\' ..... '\0' } is it because "\001" is implicitly converted to an octal value of 1. Also, would "\00112\000\000\000" cause an overflow?
Last edited by solfreak; 06-12-2007 at 01:41 PM..
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LEARN ABOUT OPENSOLARIS
tcl_getdouble
Tcl_GetInt(3TCL) Tcl Library Procedures Tcl_GetInt(3TCL)
__________________________________________________________________________________________________________________________________________________
NAME
Tcl_GetInt, Tcl_GetDouble, Tcl_GetBoolean - convert from string to integer, double, or boolean
SYNOPSIS
#include <tcl.h>
int
Tcl_GetInt(interp, string, intPtr)
int
Tcl_GetDouble(interp, string, doublePtr)
int
Tcl_GetBoolean(interp, string, boolPtr)
ARGUMENTS
Tcl_Interp *interp (in) Interpreter to use for error reporting.
CONST char *string (in) Textual value to be converted.
int *intPtr (out) Points to place to store integer value converted from string.
double *doublePtr (out) Points to place to store double-precision floating-point value converted from string.
int *boolPtr (out) Points to place to store boolean value (0 or 1) converted from string.
_________________________________________________________________
DESCRIPTION
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 string 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 string
doesn't have the proper syntax for the desired type then TCL_ERROR is returned, an error message is left in the interpreter's result, and
nothing is stored at *intPtr or *doublePtr or *boolPtr.
Tcl_GetInt expects string to consist of a collection of integer digits, optionally signed and optionally preceded by white space. If the
first two characters of string are ``0x'' then string is expected to be in hexadecimal form; otherwise, if the first character of string
is ``0'' then string is expected to be in octal form; otherwise, string is expected to be in decimal form.
Tcl_GetDouble expects string 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 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.
Tcl_GetBoolean expects string to specify a boolean value. If string is any of 0, false, no, or off, then Tcl_GetBoolean stores a zero
value at *boolPtr. If string is any of 1, true, yes, or on, then 1 is stored at *boolPtr. Any of these values may be abbreviated, and
upper-case spellings are also acceptable.
KEYWORDS
boolean, conversion, double, floating-point, integer
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Availability | SUNWTcl |
+--------------------+-----------------+
|Interface Stability | Uncommitted |
+--------------------+-----------------+
NOTES
Source for Tcl is available on http://opensolaris.org.
Tcl Tcl_GetInt(3TCL)