Tcl_PrintDouble




NAME
       Tcl_PrintDouble - Convert floating value to string

SYNOPSIS
       #include <tcl.h>

       Tcl_PrintDouble(interp, value, dst)

ARGUMENTS
       Tcl_Interp   *interp   (in)      Before   Tcl  8.0,  the  tcl_precision                                         variable  in  this  interpreter   con-                                         trolled  the  conversion.   As  of Tcl                                         8.0, this argument is ignored and  the                                         conversion   is   controlled   by  the                                         tcl_precision  variable  that  is  now                                         shared by all interpreters.

       double       value     (in)      Floating-point  value to be converted.

       char         *dst      (out)     Where  to  store  string  representing
                                        value.   Must  have  at least TCL_DOUBLE_SPACE
                                        characters of storage.


DESCRIPTION
       Tcl_PrintDouble generates a string that represents the value  of  value
       and  stores it in memory at the location given by dst.  It uses %g format
       to generate the string, with one special twist: the string is guaranteed
        to  contain  either a ``.'' or an ``e'' so that it doesn't look
       like an integer.  Where %g would generate an integer  with  no  decimal
       point, Tcl_PrintDouble adds ``.0''.


KEYWORDS
       conversion, double-precision, floating-point, string



Tcl                                   8.0                   Tcl_PrintDouble(3)