1TRUNC(P)                   POSIX Programmer's Manual                  TRUNC(P)
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NAME

6       trunc, truncf, truncl - round to truncated integer value
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SYNOPSIS

9       #include <math.h>
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11       double trunc(double x);
12       float truncf(float x);
13       long double truncl(long double x);
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DESCRIPTION

17       These  functions  shall  round  their argument to the integer value, in
18       floating format, nearest to but no larger in magnitude than  the  argu‐
19       ment.
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RETURN VALUE

22       Upon  successful completion, these functions shall return the truncated
23       integer value.
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25       If x is NaN, a NaN shall be returned.
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27       If x is ±0 or ±Inf, x shall be returned.
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ERRORS

30       No errors are defined.
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32       The following sections are informative.
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EXAMPLES

35       None.
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APPLICATION USAGE

38       None.
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RATIONALE

41       None.
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FUTURE DIRECTIONS

44       None.
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SEE ALSO

47       The Base Definitions volume of IEEE Std 1003.1-2001, <math.h>
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50       Portions of this text are reprinted and reproduced in  electronic  form
51       from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
52       -- Portable Operating System Interface (POSIX),  The  Open  Group  Base
53       Specifications  Issue  6,  Copyright  (C) 2001-2003 by the Institute of
54       Electrical and Electronics Engineers, Inc and The Open  Group.  In  the
55       event of any discrepancy between this version and the original IEEE and
56       The Open Group Standard, the original IEEE and The Open Group  Standard
57       is  the  referee document. The original Standard can be obtained online
58       at http://www.opengroup.org/unix/online.html .
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62IEEE/The Open Group                  2003                             TRUNC(P)
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