| The Android Open Source Project | 1dc9e47 | 2009-03-03 19:28:35 -0800 | [diff] [blame] | 1 | .\" Copyright (c) 2004, 2005 David Schultz <das@FreeBSD.org> |
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| 13 | .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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| 25 | .\" $FreeBSD: src/lib/msun/man/trunc.3,v 1.3 2005/06/15 19:04:04 ru Exp $ |
| 26 | .\" |
| 27 | .Dd April 16, 2005 |
| 28 | .Dt TRUNC 3 |
| 29 | .Os |
| 30 | .Sh NAME |
| 31 | .Nm trunc , |
| 32 | .Nm truncf , |
| 33 | .Nm truncl |
| 34 | .Nd nearest integral value with magnitude less than or equal to |x| |
| 35 | .Sh LIBRARY |
| 36 | .Lb libm |
| 37 | .Sh SYNOPSIS |
| 38 | .In math.h |
| 39 | .Ft double |
| 40 | .Fn trunc "double x" |
| 41 | .Ft float |
| 42 | .Fn truncf "float x" |
| 43 | .Ft "long double" |
| 44 | .Fn truncl "long double x" |
| 45 | .Sh DESCRIPTION |
| 46 | The |
| 47 | .Fn trunc , |
| 48 | .Fn truncf , |
| 49 | and |
| 50 | .Fn truncl |
| 51 | functions return the nearest integral value with magnitude less than |
| 52 | or equal to |
| 53 | .Pf | Fa x Ns | . |
| 54 | They are equivalent to |
| 55 | .Fn rint , |
| 56 | .Fn rintf , |
| 57 | and |
| 58 | .Fn rintl , |
| 59 | respectively, in the |
| 60 | .Dv FE_TOWARDZERO |
| 61 | rounding mode. |
| 62 | .Sh SEE ALSO |
| 63 | .Xr ceil 3 , |
| 64 | .Xr fesetround 3 , |
| 65 | .Xr floor 3 , |
| 66 | .Xr math 3 , |
| 67 | .Xr nextafter 3 , |
| 68 | .Xr rint 3 , |
| 69 | .Xr round 3 |
| 70 | .Sh STANDARDS |
| 71 | The |
| 72 | .Fn trunc , |
| 73 | .Fn truncf , |
| 74 | and |
| 75 | .Fn truncl |
| 76 | functions conform to |
| 77 | .St -isoC-99 . |
| 78 | .Sh HISTORY |
| 79 | These routines first appeared in |
| 80 | .Fx 5.3 . |