Tcl_GetDouble man page on QNX

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Tcl_GetInt(3)		    Tcl Library Procedures		 Tcl_GetInt(3)


       Tcl_GetInt,  Tcl_GetDouble,  Tcl_GetBoolean  -  convert	from string to
       integer, double, or boolean

       #include <tcl.h>

       Tcl_GetInt(interp, string, intPtr)

       Tcl_GetDouble(interp, string, doublePtr)

       Tcl_GetBoolean(interp, string, boolPtr)

       Tcl_Interp   *interp	 (in)	   Interpreter	to   use   for	 error

       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 con‐
					   verted from string.

       int	    *boolPtr	 (out)	   Points to place  to	store  boolean
					   value   (0  or  1)  converted  from

       These procedures convert from strings to integers  or  double-precision
       floating-point  values or booleans (represented as 0- or 1-valued inte‐
       gers).  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.

       boolean, conversion, double, floating-point, integer

Tcl								 Tcl_GetInt(3)
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