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 controlled 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