Tcl_PrintDouble — Convert floating value to string
#include <tcl.h>
Tcl_PrintDouble(interp, value, dst)
- Tcl_Interp *interp (in)
-
This argument is ignored.
- double value (in)
-
Floating-point value to be converted.
- char *dst (out)
-
Where to store the 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 one
special twist: the string is guaranteed to contain either a
“.”
or an
“e”
so that it does not look like an integer. Where %g would
generate an integer with no decimal point, Tcl_PrintDouble adds
“.0”.
The result will have the fewest digits needed to
represent the number in such a way that Tcl_NewDoubleObj
will generate the same number when presented with the given string.
IEEE semantics of rounding to even apply to the conversion.
conversion, double-precision, floating-point, string
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Copyright © 1994-1997 Sun Microsystems, Inc.