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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