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-'\" t
-.\" Copyright 2004 Andries Brouwer <aeb@cwi.nl>.
-.\" and Copyright 2008, Linux Foundation, written by Michael Kerrisk
-.\" <mtk.manpages@gmail.com>
-.\"
-.\" SPDX-License-Identifier: Linux-man-pages-copyleft
-.\"
-.TH scalbln 3 2023-10-31 "Linux man-pages 6.7"
-.SH NAME
-scalbn, scalbnf, scalbnl, scalbln, scalblnf, scalblnl \-
-multiply floating-point number by integral power of radix
-.SH LIBRARY
-Math library
-.RI ( libm ", " \-lm )
-.SH SYNOPSIS
-.nf
-.B #include <math.h>
-.P
-.BI "double scalbln(double " x ", long " exp );
-.BI "float scalblnf(float " x ", long " exp );
-.BI "long double scalblnl(long double " x ", long " exp );
-.P
-.BI "double scalbn(double " x ", int " exp );
-.BI "float scalbnf(float " x ", int " exp );
-.BI "long double scalbnl(long double " x ", int " exp );
-.fi
-.P
-.RS -4
-Feature Test Macro Requirements for glibc (see
-.BR feature_test_macros (7)):
-.RE
-.P
-.BR scalbln (),
-.BR scalblnf (),
-.BR scalblnl ():
-.nf
- _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
- || /* Since glibc 2.19: */ _DEFAULT_SOURCE
-.fi
-.P
-.BR scalbn (),
-.BR scalbnf (),
-.BR scalbnl ():
-.nf
- _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
- || /* Since glibc 2.19: */ _DEFAULT_SOURCE
- || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
-.fi
-.SH DESCRIPTION
-These functions multiply their first argument
-.I x
-by
-.B FLT_RADIX
-(probably 2)
-to the power of
-.IR exp ,
-that is:
-.P
-.nf
- x * FLT_RADIX ** exp
-.fi
-.P
-The definition of
-.B FLT_RADIX
-can be obtained by including
-.IR <float.h> .
-.\" not in /usr/include but in a gcc lib
-.SH RETURN VALUE
-On success, these functions return
-.I x
-*
-.B FLT_RADIX
-**
-.IR exp .
-.P
-If
-.I x
-is a NaN, a NaN is returned.
-.P
-If
-.I x
-is positive infinity (negative infinity),
-positive infinity (negative infinity) is returned.
-.P
-If
-.I x
-is +0 (\-0), +0 (\-0) is returned.
-.P
-If the result overflows,
-a range error occurs,
-and the functions return
-.BR HUGE_VAL ,
-.BR HUGE_VALF ,
-or
-.BR HUGE_VALL ,
-respectively, with a sign the same as
-.IR x .
-.P
-If the result underflows,
-a range error occurs,
-and the functions return zero, with a sign the same as
-.IR x .
-.SH ERRORS
-See
-.BR math_error (7)
-for information on how to determine whether an error has occurred
-when calling these functions.
-.P
-The following errors can occur:
-.TP
-Range error, overflow
-.\" .I errno
-.\" is set to
-.\" .BR ERANGE .
-An overflow floating-point exception
-.RB ( FE_OVERFLOW )
-is raised.
-.TP
-Range error, underflow
-.I errno
-is set to
-.BR ERANGE .
-An underflow floating-point exception
-.RB ( FE_UNDERFLOW )
-is raised.
-.SH ATTRIBUTES
-For an explanation of the terms used in this section, see
-.BR attributes (7).
-.TS
-allbox;
-lbx lb lb
-l l l.
-Interface Attribute Value
-T{
-.na
-.nh
-.BR scalbn (),
-.BR scalbnf (),
-.BR scalbnl (),
-.BR scalbln (),
-.BR scalblnf (),
-.BR scalblnl ()
-T} Thread safety MT-Safe
-.TE
-.SH STANDARDS
-C11, POSIX.1-2008.
-.SH HISTORY
-glibc 2.1.
-C99, POSIX.1-2001.
-.SH HISTORY
-These functions differ from the obsolete functions described in
-.BR scalb (3)
-in the type of their second argument.
-The functions described on this page have a second argument
-of an integral type, while those in
-.BR scalb (3)
-have a second argument of type
-.IR double .
-.SH NOTES
-If
-.B FLT_RADIX
-equals 2 (which is usual), then
-.BR scalbn ()
-is equivalent to
-.BR ldexp (3).
-.SH BUGS
-Before glibc 2.20,
-.\" https://www.sourceware.org/bugzilla/show_bug.cgi?id=6803
-these functions did not set
-.I errno
-for range errors.
-.SH SEE ALSO
-.BR ldexp (3),
-.BR scalb (3)