Tcl Library Procedures
Tcl_PrintDouble - Convert floating value to string
Tcl_PrintDouble(interp, value, dst)
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.
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.
conversion, double-precision, floating-point, string
Last change: 7.0
[ tcl8.0a1 | tk8.0a1 | X-ref ]
Copyright © 1989-1994 The Regents of the University of California.
Copyright © 1994-1996 Sun Microsystems, Inc.