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- .\" Copyright (c) 2004, 2005 David Schultz <[email protected]>
- .\" All rights reserved.
- .\"
- .\" Redistribution and use in source and binary forms, with or without
- .\" modification, are permitted provided that the following conditions
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- .\" 1. Redistributions of source code must retain the above copyright
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- .\" 2. Redistributions in binary form must reproduce the above copyright
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- .\" documentation and/or other materials provided with the distribution.
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- .\" $FreeBSD: src/lib/msun/man/trunc.3,v 1.3 2005/06/15 19:04:04 ru Exp $
- .\"
- .Dd April 16, 2005
- .Dt TRUNC 3
- .Os
- .Sh NAME
- .Nm trunc ,
- .Nm truncf ,
- .Nm truncl
- .Nd nearest integral value with magnitude less than or equal to |x|
- .Sh LIBRARY
- .Lb libm
- .Sh SYNOPSIS
- .In math.h
- .Ft double
- .Fn trunc "double x"
- .Ft float
- .Fn truncf "float x"
- .Ft "long double"
- .Fn truncl "long double x"
- .Sh DESCRIPTION
- The
- .Fn trunc ,
- .Fn truncf ,
- and
- .Fn truncl
- functions return the nearest integral value with magnitude less than
- or equal to
- .Pf | Fa x Ns | .
- They are equivalent to
- .Fn rint ,
- .Fn rintf ,
- and
- .Fn rintl ,
- respectively, in the
- .Dv FE_TOWARDZERO
- rounding mode.
- .Sh SEE ALSO
- .Xr ceil 3 ,
- .Xr fesetround 3 ,
- .Xr floor 3 ,
- .Xr math 3 ,
- .Xr nextafter 3 ,
- .Xr rint 3 ,
- .Xr round 3
- .Sh STANDARDS
- The
- .Fn trunc ,
- .Fn truncf ,
- and
- .Fn truncl
- functions conform to
- .St -isoC-99 .
- .Sh HISTORY
- These routines first appeared in
- .Fx 5.3 .
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