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Diffstat (limited to 'lib/libc/gen/ldexp.3')
-rw-r--r-- | lib/libc/gen/ldexp.3 | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/lib/libc/gen/ldexp.3 b/lib/libc/gen/ldexp.3 new file mode 100644 index 0000000..e8e4fba --- /dev/null +++ b/lib/libc/gen/ldexp.3 @@ -0,0 +1,77 @@ +.\" Copyright (c) 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" the American National Standards Committee X3, on Information +.\" Processing Systems. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)ldexp.3 8.2 (Berkeley) 4/19/94 +.\" $FreeBSD$ +.\" +.Dd March 4, 2005 +.Dt LDEXP 3 +.Os +.Sh NAME +.Nm ldexp , +.Nm ldexpf , +.Nm ldexpl +.Nd multiply floating-point number by integral power of 2 +.Sh LIBRARY +.Lb libm +.Sh SYNOPSIS +.In math.h +.Ft double +.Fn ldexp "double x" "int exp" +.Ft float +.Fn ldexpf "float x" "int exp" +.Ft long double +.Fn ldexpl "long double x" "int exp" +.Sh DESCRIPTION +The +.Fn ldexp , +.Fn ldexpf , +and +.Fn ldexpl +functions multiply a floating-point number by an integral +power of 2. +.Sh RETURN VALUES +These functions return the value of +.Fa x +times 2 raised to the power +.Fa exp . +.Sh SEE ALSO +.Xr frexp 3 , +.Xr math 3 , +.Xr modf 3 +.Sh STANDARDS +The +.Fn ldexp , +.Fn ldexpf , +and +.Fn ldexpl +functions conform to +.St -isoC-99 . |