1*61111Sbostic.\" Copyright (c) 1991, 1993 2*61111Sbostic.\" The Regents of the University of California. All rights reserved. 348901Scael.\" 450307Sbostic.\" This code is derived from software contributed to Berkeley by 550307Sbostic.\" the American National Standards Committee X3, on Information 650307Sbostic.\" Processing Systems. 750307Sbostic.\" 848901Scael.\" %sccs.include.redist.man% 948901Scael.\" 10*61111Sbostic.\" @(#)ldexp.3 8.1 (Berkeley) 06/04/93 1148901Scael.\" 1248901Scael.Dd 1348901Scael.Dt LDEXP 3 1448901Scael.Os 1548901Scael.Sh NAME 1648901Scael.Nm ldexp 1748901Scael.Nd mutliply floating-point number by integral power of 2 1848901Scael.Sh SYNOPSIS 1948901Scael.Fd #include <math.h> 2048901Scael.Ft double 2148901Scael.Fn ldexp "double x" "int exp" 2248901Scael.Sh DESCRIPTION 2348901ScaelThe 2448901Scael.Fn ldexp 2548901Scaelfunction multiplies a floating-point number by an integral 2648901Scaelpower of 2. 2748901Scael.Sh RETURN VALUES 2848901ScaelThe 2948901Scael.Fn ldexp 3048901Scaelfunction returns the value of 3148901Scael.Fa x 3248901Scaeltimes 2 raised to the power 3348901Scael.Fa exp . 3448901Scael.Pp 3548901ScaelIf the resultant value would cause an overflow, 3648901Scaelthe global variable 3748901Scael.Va errno 3848901Scaelis set to 3948901Scael.Er ERANGE 4048901Scaeland the value 4148901Scael.Dv HUGE 4248901Scaelis returned. 4348901Scael.Sh SEE ALSO 4448901Scael.Xr frexp 3 , 4548901Scael.Xr modf 3 , 4648901Scael.Xr math 3 4748901Scael.Sh STANDARDS 4848901ScaelThe 4948901Scael.Fn ldexp 5048901Scaelfunction conforms 5148901Scael.St -ansiC . 52