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    Command:

    nearbyintl

    
    
    
    

    SYNOPSIS

           #include <math.h>
    
           double nearbyint(double x);
           float nearbyintf(float x);
           long double nearbyintl(long double x);
    
           double rint(double x);
           float rintf(float x);
           long double rintl(long double x);
    
           Link with -lm.
    
       Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
    
           nearbyint(), nearbyintf(), nearbyintl():
               _XOPEN_SOURCE >= 600 || _POSIX_C_SOURCE >= 200112L ||
               _ISOC99_SOURCE;
               or cc -std=c99
           rint():
               _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE >= 500 ||
               _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED || _ISOC99_SOURCE ||
               _POSIX_C_SOURCE >= 200112L;
               or cc -std=c99
           rintf(), rintl():
               _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE >= 600 ||
               _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L;
               or cc -std=c99
    
    
    

    DESCRIPTION

           The nearbyint(), nearbyintf(), and nearbyintl() functions  round  their
           argument  to  an integer value in floating-point format, using the cur-
           rent rounding direction (see fesetround(3))  and  without  raising  the
           inexact exception.
    
           The  rint(), rintf(), and rintl() functions do the same, but will raise
           the inexact exception (FE_INEXACT, checkable via fetestexcept(3))  when
           the result differs in value from the argument.
    
    
    

    RETURN VALUE

           These functions return the rounded integer value.
    
           If x is integral, +0, -0, NaN, or infinite, x itself is returned.
    
    
    

    ERRORS

           No  errors  occur.  POSIX.1-2001 documents a range error for overflows,
           but see NOTES.
    
    
    

    ATTRIBUTES

       Multithreading (see pthreads(7))
           The  nearbyint(),  nearbyintf(),  nearbyintl(),  rint(),  rintf(),  and
    
           If you want to store the rounded value in an integer type, you probably
           want to use one of the functions described in lrint(3) instead.
    
    
    

    SEE ALSO

           ceil(3), floor(3), lrint(3), round(3), trunc(3)
    
                                      2013-08-26                           RINT(3)
    
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