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OpenDarwin 7.2.1 - man page for tcl_getint (opendarwin section 3)

Tcl_GetInt(3)					Tcl Library Procedures					Tcl_GetInt(3)

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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 (rep- resented 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 proce- dure'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 pre- ceded by white space. If the first two characters of string are ``0x'' then string is expected to be in hexa- decimal 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 expo- nent. 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 Tcl Tcl_GetInt(3)


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