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OpenDarwin 7.2.1 - man page for tcl_printdouble (opendarwin section 3)

Tcl_PrintDouble(3)				Tcl Library Procedures				   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 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 contain either a ``.'' or an ``e'' so that it doesn't look like an integer. Where %g would generate an inte- ger with no decimal point, Tcl_PrintDouble adds ``.0''.
KEYWORDS
conversion, double-precision, floating-point, string Tcl 8.0 Tcl_PrintDouble(3)


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