Man page or keyword search:   man All Sections 1 - General Commands 2 - System Calls 3 - Subroutines, Functions 4 - Special Files 5 - File Formats 6 - Games and Screensavers 7 - Macros and Conventions 8 - Maintenence Commands 9 - Kernel Interface New Commands Server 4.4BSD AIX Alpinelinux Archlinux Aros BSDOS BSDi Bifrost CentOS Cygwin Darwin Debian DigitalUNIX DragonFly ElementaryOS Fedora FreeBSD Gentoo GhostBSD HP-UX Haiku Hurd IRIX Inferno JazzOS Kali Knoppix LinuxMint MacOSX Mageia Mandriva Manjaro Minix MirBSD NeXTSTEP NetBSD OPENSTEP OSF1 OpenBSD OpenDarwin OpenIndiana OpenMandriva OpenServer OpenSuSE OpenVMS Oracle PC-BSD Peanut Pidora Plan9 QNX Raspbian RedHat Scientific Slackware SmartOS Solaris SuSE SunOS Syllable Tru64 UNIXv7 Ubuntu Ultrix UnixWare Xenix YellowDog aLinux   9087 pages apropos Keyword Search (all sections) Output format html ascii pdf view pdf save postscript

LDEXP(3)		 BSD Library Functions Manual		      LDEXP(3)

NAME
     ldexp, ldexpf — multiply floating-point number by integral power of 2

LIBRARY
     Math Library (libm, -lm)

SYNOPSIS
     #include <math.h>

     double
     ldexp(double x, int exp);

     float
     ldexpf(float x, int exp);

DESCRIPTION
     The ldexp() family of functions compute

	   x * 2^exp

     for a real floating-point number x.

RETURN VALUES
     The functions return the value of x times 2 raised to the power exp.
     Otherwise the following may occur:

	   1.	If x is NaN, a NaN is returned.

	   2.	If exp is zero or x is either ± 0 or ±∞, x is returned.

	   3.	If the call would cause an overflow, a range error occurs and
		either ±HUGE_VAL, ±HUGE_VALF, or ±HUGE_VALL is returned,
		depending on the sign of x and the type of the return value.

	   4.	If an underflow would be caused by the correct value, and the
		value is not representable, either 0.0 or an implementation-
		defined value is returned.

SEE ALSO
     frexp(3), math(3), modf(3)

STANDARDS
     The described functions conform to ISO/IEC 9899:1999 (“ISO C99”).

BSD			      September 18, 2011			   BSD

                             _         _         _ 
                            | |       | |       | |     
                            | |       | |       | |     
                         __ | | __ __ | | __ __ | | __  
                         \ \| |/ / \ \| |/ / \ \| |/ /  
                          \ \ / /   \ \ / /   \ \ / /   
                           \   /     \   /     \   /    
                            \_/       \_/       \_/ 

Vote for polarhome