linuXperts.org

Tcl_PrintDouble(3) Tcl Library Procedures 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 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_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 for- mat to generate the string, with one special twist: the string is guar- anteed 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 Tcl 8.0 Tcl_PrintDouble(3)