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    Command:

    truncf

    
    
    

    SYNOPSIS

           #include <math.h>
    
           double trunc(double x);
           float truncf(float x);
           long double truncl(long double x);
    
           Link with -lm.
    
       Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
    
           trunc(), truncf(), truncl():
               _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE ||
               _POSIX_C_SOURCE >= 200112L;
               or cc -std=c99
    
    
    

    DESCRIPTION

           These functions round x to the nearest integer not larger  in  absolute
           value.
    
    
    

    RETURN VALUE

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

    ERRORS

           No errors occur.
    
    
    

    VERSIONS

           These functions first appeared in glibc in version 2.1.
    
    
    

    ATTRIBUTES

       Multithreading (see pthreads(7))
           The trunc(), truncf(), and truncl() functions are thread-safe.
    
    
    

    CONFORMING TO

           C99, POSIX.1-2001.
    
    
    

    NOTES

           The  integral  value  returned  by  these functions may be too large to
           store in an integer type (int, long,  etc.).   To  avoid  an  overflow,
           which  will  produce undefined results, an application should perform a
           range check on the returned value before assigning  it  to  an  integer
           type.
    
    
    

    SEE ALSO

           ceil(3), floor(3), lrint(3), nearbyint(3), rint(3), round(3)
    
                                      2013-06-21                          TRUNC(3)
    
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