minix man page for gcvt

GCVT(3)                                                      Linux Programmer's Manual                                                     GCVT(3)

NAME
       gcvt - convert a floating-point number to a string

SYNOPSIS
       #include <stdlib.h>

       char *gcvt(double number, int ndigit, char *buf);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       gcvt():
           Since glibc 2.12:
               (_XOPEN_SOURCE >= 500) ! (_POSIX_C_SOURCE >= 200112L)
                   || /* Glibc since 2.19: */ _DEFAULT_SOURCE
                   || /* Glibc versions <= 2.19: */ _SVID_SOURCE
           Before glibc 2.12:
               _SVID_SOURCE || _XOPEN_SOURCE >= 500

DESCRIPTION
       The gcvt() function converts number to a minimal length null-terminated ASCII string and stores the result in buf.  It produces ndigit sig-
       nificant 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.

ATTRIBUTES
       For an explanation of the terms used in this section, see attributes(7).

       +----------+---------------+---------+
       |Interface | Attribute     | Value   |
       +----------+---------------+---------+
       |gcvt()    | Thread safety | MT-Safe |
       +----------+---------------+---------+

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

SEE ALSO
       ecvt(3), fcvt(3), sprintf(3)

COLOPHON
       This  page is part of release 4.15 of the Linux man-pages project.  A description of the project, information about reporting bugs, and the
       latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.

                                                                    2017-09-15                                                             GCVT(3)