tcl_printdouble(3)
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 con
trolled the conversion.
As of Tcl 8.0, this argu
ment is ignored and the
conversion is controlled
by the tcl_precision variable that is now
shared by all inter
preters. - double value (in) Floating-point value to
- be converted.
- char *dst (out) Where to store string
- representing value. Must
have at least TCL_DOU
BLE_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 one special twist: the string is guaranteed to con
tain 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