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NAME
gcvt - convert a floating-point number to a string
LIBRARY
Standard C library (libc, -lc)
SYNOPSIS
bash
#include <stdlib.h>bash
char *gcvt(double \nnumber\n, int \nndigit\n, char *\nbuf\n);gcvt():
bash
\n
Since glibc 2.17
\n
(_XOPEN_SOURCE >= 500 && ! (_POSIX_C_SOURCE >= 200809L))
\n
|| /* glibc >= 2.20 */ _DEFAULT_SOURCE
\n
|| /* glibc <= 2.19 */ _SVID_SOURCE
\n
glibc 2.12 to glibc 2.16:
\n
(_XOPEN_SOURCE >= 500 && ! (_POSIX_C_SOURCE >= 200112L))
\n
|| _SVID_SOURCE
\n
Before glibc 2.12:
\n
_SVID_SOURCE || _XOPEN_SOURCE >= 500DESCRIPTION
The gcvt() function converts number to a minimal length null-terminated ASCII string and stores the result in buf. It produces ndigit significant digits in either printf(3) F format or E format.
RETURN VALUE
The gcvt() function returns buf.
ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).
| Interface | Attribute | Value |
| gcvt () | Thread safety | MT-Safe |
STANDARDS
None.
HISTORY
Marked as LEGACY in POSIX.1-2001. POSIX.1-2008 removed it, recommending the use of sprintf(3) instead (though snprintf(3) may be preferable).
SEE ALSO
ecvt(3), fcvt(3), sprintf(3)