Tcl_PrintDouble(3) Tcl (8.0) Tcl_PrintDouble(3)
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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.
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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
Page 1 (printed 2/19/99)
