Tcl_PrintDouble(3Tcl)Tcl_PrintDouble(3Tcl)NAME
Tcl_PrintDouble - Convert floating value to string
SYNOPSIS
#include <tcl.h>
Tcl_PrintDouble(interp, value, dst)
ARGUMENTS
Tcl_Interp *interp (in) Interpreter that controls the
conversion.
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 two special twists. First, 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''). Second, the number of significant
digits printed at dst is controlled by the tcl_precision variable in
interp; if tcl_precision is undefined then 6 significant digits are
printed.
KEYWORDS
conversion, double-precision, floating-point, string
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