Function gcvt 

pub extern "C" fn gcvt(
    value: c_double,
    ndigit: c_int,
    buf: *mut c_char,
) -> *mut c_char

👎Deprecated

See https://pubs.opengroup.org/onlinepubs/009695399/functions/ecvt.html.

Deprecation

The gcvt() function was marked as legacy in the Open Group Base Specifications Issue 6, and the function was removed in Issue 7.