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    Command:

    gcvt

    
    
    

    SYNOPSIS

           #include <stdlib.h>
    
           char *gcvt(double number, size_t ndigit, char *buf);
    
       Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
    
           gcvt():
               Since glibc 2.12:
                   _SVID_SOURCE ||
                       (_XOPEN_SOURCE >= 500 ||
                           _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED) &&
                       !(_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600)
               Before glibc 2.12:
                   _SVID_SOURCE || _XOPEN_SOURCE >= 500 || _XOPEN_SOURCE &&
                   _XOPEN_SOURCE_EXTENDED
    
    
    

    DESCRIPTION

           The gcvt() function converts number to a minimal length null-terminated
           ASCII string and stores the result in buf.  It produces ndigit signifi-
           cant digits in either printf(3) F format or E format.
    
    
    

    RETURN VALUE

           The gcvt() function returns the address of the  string  pointed  to  by
           buf.
    
    
    

    CONFORMING TO

           Marked  as LEGACY in POSIX.1-2001.  POSIX.1-2008 removes the specifica-
           tion of gcvt(), recommending the  use  of  sprintf(3)  instead  (though
           snprintf(3) may be preferable).
    
    
    

    SEE ALSO

           ecvt(3), fcvt(3), sprintf(3)
    
                                      2010-09-20                           GCVT(3)
    
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