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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-24 04:52:22 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-24 04:52:22 +0000
commit3d08cd331c1adcf0d917392f7e527b3f00511748 (patch)
tree312f0d1e1632f48862f044b8bb87e602dcffb5f9 /man3/trunc.3
parentAdding debian version 6.7-2. (diff)
downloadmanpages-3d08cd331c1adcf0d917392f7e527b3f00511748.tar.xz
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Merging upstream version 6.8.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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-'\" t
-.\" Copyright (C) 2001 Andries Brouwer <aeb@cwi.nl>.
-.\"
-.\" SPDX-License-Identifier: Linux-man-pages-copyleft
-.\"
-.TH trunc 3 2023-10-31 "Linux man-pages 6.7"
-.SH NAME
-trunc, truncf, truncl \- round to integer, toward zero
-.SH LIBRARY
-Math library
-.RI ( libm ", " \-lm )
-.SH SYNOPSIS
-.nf
-.B #include <math.h>
-.P
-.BI "double trunc(double " x );
-.BI "float truncf(float " x );
-.BI "long double truncl(long double " x );
-.fi
-.P
-.RS -4
-Feature Test Macro Requirements for glibc (see
-.BR feature_test_macros (7)):
-.RE
-.P
-.BR trunc (),
-.BR truncf (),
-.BR truncl ():
-.nf
- _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
-.fi
-.SH DESCRIPTION
-These functions round
-.I x
-to the nearest integer value that is not larger in magnitude than
-.IR x .
-.SH RETURN VALUE
-These functions return the rounded integer value, in floating format.
-.P
-If
-.I x
-is integral, infinite, or NaN,
-.I x
-itself is returned.
-.SH ERRORS
-No errors occur.
-.SH ATTRIBUTES
-For an explanation of the terms used in this section, see
-.BR attributes (7).
-.TS
-allbox;
-lbx lb lb
-l l l.
-Interface Attribute Value
-T{
-.na
-.nh
-.BR trunc (),
-.BR truncf (),
-.BR truncl ()
-T} Thread safety MT-Safe
-.TE
-.SH STANDARDS
-C11, POSIX.1-2008.
-.SH HISTORY
-glibc 2.1.
-C99, POSIX.1-2001.
-.SH NOTES
-The integral value returned by these functions may be too large
-to store in an integer type
-.RI ( int ,
-.IR 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.
-.SH SEE ALSO
-.BR ceil (3),
-.BR floor (3),
-.BR lrint (3),
-.BR nearbyint (3),
-.BR rint (3),
-.BR round (3)