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Diffstat (limited to 'lib/msun/man/ieee_test.3')
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diff --git a/lib/msun/man/ieee_test.3 b/lib/msun/man/ieee_test.3 new file mode 100644 index 0000000..e1311ca --- /dev/null +++ b/lib/msun/man/ieee_test.3 @@ -0,0 +1,90 @@ +.\" Copyright (c) 1985, 1991 Regents of the University of California. +.\" All rights reserved. +.\" +.\" 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. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 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. +.\" +.\" from: @(#)ieee.3 6.4 (Berkeley) 5/6/91 +.\" $Id: ieee_test.3,v 1.1 1994/03/11 17:19:01 jtc Exp $ +.\" +.Dd March 10, 1994 +.Dt IEEE_TEST 3 +.Os +.Sh NAME +.Nm logb , +.Nm scalb , +.Nm significand +.Nd IEEE test functions +.Sh SYNOPSIS +.Fd #include <math.h> +.Ft double +.Fn logb "double x" +.Ft double +.Fn scalb "double x" "double n" +.Ft double +.Fn significand "double x" +.Sh DESCRIPTION +These functions allow users to test conformance to +.St -ieee754 . +Their use is not otherwise recommended. +.Pp +.Fn logb x +returns +.Fa x Ns 's exponent +.Fa n , +a signed integer converted to double\-precision floating\-point. +.Fn logb \*(Pm\*(If += +\*(If; +.Fn logb 0 += -\*(If with a division by zero exception. +.Pp +.Fn scalbn x n +returns +.Fa x Ns \(**(2** Ns Fa n ) +computed by exponent manipulation. +.Pp +.Fn significand x +returns +.Fa sig , +where +.Fa x +:= +.Fa sig No \(** 2** Ns Fa n +with 1 \(<= +.Fa sig +< 2. +.Fn significand x +is not defined when +.Fa x +is 0, \*(Pm\*(If, or \*(Na. +.Sh SEE ALSO +.Xr ieee 3 , +.Xr math 3 + +.Sh STANDARDS +.St -ieee754 |