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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 scalb 3 2023-10-31 "Linux man-pages 6.7"
-.SH NAME
-scalb, scalbf, scalbl \- multiply floating-point number
-by integral power of radix (OBSOLETE)
-.SH LIBRARY
-Math library
-.RI ( libm ", " \-lm )
-.SH SYNOPSIS
-.nf
-.B #include <math.h>
-.P
-.BI "[[deprecated]] double scalb(double " x ", double " exp );
-.BI "[[deprecated]] float scalbf(float " x ", float " exp );
-.BI "[[deprecated]] long double scalbl(long double " x ", long double " exp );
-.fi
-.P
-.RS -4
-Feature Test Macro Requirements for glibc (see
-.BR feature_test_macros (7)):
-.RE
-.P
-.BR scalb ():
-.nf
- _XOPEN_SOURCE >= 500
-.\" || _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED
- || /* Since glibc 2.19: */ _DEFAULT_SOURCE
- || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
-.fi
-.P
-.BR scalbf (),
-.BR scalbl ():
-.nf
- _XOPEN_SOURCE >= 600
- || /* 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
-or
-.I exp
-is a NaN, a NaN is returned.
-.P
-If
-.I x
-is positive infinity (negative infinity),
-and
-.I exp
-is not negative infinity,
-positive infinity (negative infinity) is returned.
-.P
-If
-.I x
-is +0 (\-0), and
-.I exp
-is not positive infinity, +0 (\-0) is returned.
-.P
-If
-.I x
-is zero, and
-.I exp
-is positive infinity,
-a domain error occurs, and
-a NaN is returned.
-.P
-If
-.I x
-is an infinity,
-and
-.I exp
-is negative infinity,
-a domain error occurs, and
-a NaN 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
-Domain error: \fIx\fP is 0, and \fIexp\fP is positive infinity, \
-or \fIx\fP is positive infinity and \fIexp\fP is negative infinity \
-and the other argument is not a NaN
-.I errno
-is set to
-.BR EDOM .
-An invalid floating-point exception
-.RB ( FE_INVALID )
-is raised.
-.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 scalb (),
-.BR scalbf (),
-.BR scalbl ()
-T} Thread safety MT-Safe
-.TE
-.SH STANDARDS
-None.
-.SH HISTORY
-.TP
-.BR scalb ()
-4.3BSD.
-Obsolescent in POSIX.1-2001;
-Removed in POSIX.1-2008,
-recommending the use of
-.BR scalbln (3),
-.BR scalblnf (3),
-or
-.BR scalblnl (3)
-instead.
-.\" Looking at header files: scalbf() is present on the
-.\" BSDs, Tru64, HP-UX 11, Irix 6.5; scalbl() is on HP-UX 11 and Tru64.
-.SH BUGS
-Before glibc 2.20,
-.\" https://www.sourceware.org/bugzilla/show_bug.cgi?id=6803
-.\" https://www.sourceware.org/bugzilla/show_bug.cgi?id=6804
-these functions did not set
-.I errno
-for domain and range errors.
-.SH SEE ALSO
-.BR ldexp (3),
-.BR scalbln (3)