Tcl_PrintDouble()

Convert floating value to string 

Tcl Library Procedures

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.

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.

PORTABILITY

Windows 10. Windows Server 2016. Windows Server 2019. Windows 11. Windows Server 2022. Windows Server 2025.

AVAILABILITY

PTC MKS Toolkit for Professional Developers
PTC MKS Toolkit for Enterprise Developers
PTC MKS Toolkit for Enterprise Developers 64-Bit Edition

PTC MKS Toolkit 10.5 Documentation Build 40.