1.\" Copyright (c) 2004 David Schultz <das@FreeBSD.org> 2.\" Copyright (c) 2026 Jesús Blázquez <jesuscblazquez@gmail.com> 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 14.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24.\" SUCH DAMAGE. 25.Dd April 3, 2026 26.Dt FMAXIMUM_MAG_NUM 3 27.Os 28.Sh NAME 29.Nm fmaximum_mag_num , 30.Nm fmaximum_mag_numf , 31.Nm fmaximum_mag_numl , 32.Nm fminimum_mag_num , 33.Nm fminimum_mag_numf , 34.Nm fminimum_mag_numl 35.Nd floating-point maximum and minimum magnitude number functions 36.Sh LIBRARY 37.Lb libm 38.Sh SYNOPSIS 39.In math.h 40.Ft double 41.Fn fmaximum_mag_num "double x" "double y" 42.Ft float 43.Fn fmaximum_mag_numf "float x" "float y" 44.Ft "long double" 45.Fn fmaximum_mag_numl "long double x" "long double y" 46.Ft double 47.Fn fminimum_mag_num "double x" "double y" 48.Ft float 49.Fn fminimum_mag_numf "float x" "float y" 50.Ft "long double" 51.Fn fminimum_mag_numl "long double x" "long double y" 52.Sh DESCRIPTION 53The 54.Fn fmaximum_mag_num , 55.Fn fmaximum_mag_numf , 56and 57.Fn fmaximum_mag_numl 58functions determine the larger of the absolute values of 59.Fa x 60and 61.Fa y , 62and return the argument with the larger absolute value, 63preferring a numeric value over an \*(Na. 64If one argument is a numeric value and the other is an \*(Na, 65the numeric value is returned. 66If the absolute values are equal, the behavior is equivalent to calling the corresponding 67.Fn fmaximum_num 68function on the arguments. 69.Pp 70Likewise, the 71.Fn fminimum_mag_num , 72.Fn fminimum_mag_numf , 73and 74.Fn fminimum_mag_numl 75functions determine the smaller of the absolute values of 76.Fa x 77and 78.Fa y , 79and return the argument with the smaller absolute value, 80preferring a numeric value over an \*(Na. 81If one argument is a numeric value and the other is an \*(Na, 82the numeric value is returned. 83If the absolute values are equal, the behavior is equivalent to calling the corresponding 84.Fn fminimum_num 85function on the arguments. 86.Pp 87If both arguments are \*(Nas, a quiet \*(Na is returned. 88If either argument is a signaling \*(Na, an invalid exception is raised. 89Otherwise, these routines do not raise any floating-point exceptions. 90.Sh SEE ALSO 91.Xr fmax 3 , 92.Xr fmaximum 3 , 93.Xr fmaximum_mag 3 , 94.Xr fmaximum_num 3 , 95.Xr math 3 96.Sh STANDARDS 97The 98.Fn fmaximum_mag_num , 99.Fn fmaximum_mag_numf , 100.Fn fmaximum_mag_numl , 101.Fn fminimum_mag_num , 102.Fn fminimum_mag_numf , 103and 104.Fn fminimum_mag_numl 105functions conform to 106.St -isoC-2023 . 107.Sh HISTORY 108These routines first appeared in 109.Fx 16.0 ..\" 110