GOLDEN HOUR

DIR: /usr/include

Name	Size	Action
FlexLexer.h	6.73 KB
[ GL ]	-
[ X11 ]	-
a.out.h	4.25 KB
aio.h	7.56 KB
aliases.h	1.98 KB
alloca.h	1.17 KB
ar.h	1.69 KB
argp.h	24.95 KB
argz.h	5.91 KB
[ arpa ]	-
[ asm ]	-
[ asm-generic ]	-
assert.h	4.46 KB
autosprintf.h	2.36 KB
[ bind9 ]	-
[ bits ]	-
[ blkid ]	-
[ brotli ]	-
[ bsock ]	-
byteswap.h	1.42 KB
bzlib.h	6.09 KB
[ c++ ]	-
com_err.h	2.07 KB
complex.h	7.95 KB
cpio.h	2.21 KB
cpuidle.h	931 B
crypt.h	10.9 KB
ctype.h	10.71 KB
[ curl ]	-
curses.h	96.82 KB
cursesapp.h	7.06 KB
cursesf.h	27.37 KB
cursesm.h	19.44 KB
cursesp.h	8.55 KB
cursesw.h	49.13 KB
cursslk.h	7.15 KB
dbm.h	1.37 KB
dirent.h	12.32 KB
dlfcn.h	8.38 KB
[ drm ]	-
[ e2p ]	-
elf.h	178.26 KB
endian.h	2.25 KB
entities.h	4.81 KB
envz.h	2.8 KB
err.h	2.29 KB
errno.h	1.64 KB
error.h	2.36 KB
[ et ]	-
eti.h	2.9 KB
etip.h	9.61 KB
evdns.h	1.97 KB
event.h	2.68 KB
[ event2 ]	-
evhttp.h	1.99 KB
evrpc.h	1.97 KB
evutil.h	1.74 KB
execinfo.h	1.49 KB
expat.h	43.24 KB
expat_config.h	3.82 KB
expat_external.h	5.89 KB
[ ext2fs ]	-
fcntl.h	11.17 KB
features-time64.h	1.37 KB
features.h	17.69 KB
fenv.h	5.65 KB
ffi-x86_64.h	13.88 KB
ffi.h	556 B
ffitarget-x86_64.h	4.63 KB
ffitarget.h	616 B
[ finclude ]	-
fmtmsg.h	3.16 KB
fnmatch.h	2.24 KB
[ fontconfig ]	-
form.h	18.46 KB
fpu_control.h	3.5 KB
[ freetype2 ]	-
fstab.h	3.04 KB
[ fstrm ]	-
fstrm.h	12.71 KB
fts.h	9.35 KB
ftw.h	6.19 KB
[ fwctl ]	-
gconv.h	4.11 KB
gd.h	58.25 KB
gd_color_map.h	478 B
gd_errors.h	1.47 KB
gd_io.h	2.93 KB
[ gdbm ]	-
gdbm.h	11.9 KB
gdcache.h	2.92 KB
gdfontg.h	553 B
gdfontl.h	551 B
gdfontmb.h	519 B
gdfonts.h	515 B
gdfontt.h	546 B
gdfx.h	496 B
gdpp.h	50.73 KB
getopt.h	1.43 KB
gettext-po.h	15.18 KB
[ gio-unix-2.0 ]	-
[ glib-2.0 ]	-
glob.h	7.13 KB
[ gnu ]	-
gnu-versions.h	2.29 KB
gnumake.h	2.84 KB
[ google ]	-
gpg-error.h	71.92 KB
gpgrt.h	71.92 KB
[ graphite2 ]	-
grp.h	6.53 KB
gshadow.h	4.42 KB
[ gssapi ]	-
gssapi.h	181 B
[ gssrpc ]	-
[ harfbuzz ]	-
iconv.h	1.81 KB
idn-free.h	2.56 KB
idn-int.h	20 B
idna.h	3.89 KB
ieee754.h	4.8 KB
ifaddrs.h	2.77 KB
inttypes.h	8.14 KB
jconfig-64.h	1.98 KB
jconfig.h	246 B
jerror.h	15.35 KB
jmorecfg.h	13.98 KB
jpegint.h	15.25 KB
jpeglib.h	49.1 KB
[ json-c ]	-
[ kadm5 ]	-
kdb.h	62.83 KB
keyutils.h	11.52 KB
krad.h	8.72 KB
[ krb5 ]	-
krb5.h	402 B
langinfo.h	17.43 KB
lastlog.h	126 B
libaio.h	8.75 KB
[ libexslt ]	-
libgen.h	1.35 KB
libintl.h	4.47 KB
[ libltdl ]	-
[ libmount ]	-
[ libpng16 ]	-
libtasn1.h	15.05 KB
[ libxml2 ]	-
[ libxslt ]	-
limits.h	5.57 KB
link.h	7.62 KB
[ linux ]	-
lmdb.h	72.28 KB
locale.h	7.5 KB
ltdl.h	5.58 KB
[ lve ]	-
[ lzma ]	-
lzma.h	9.63 KB
malloc.h	5.77 KB
math.h	47.63 KB
maxminddb.h	8.34 KB
maxminddb_config-64.h	504 B
maxminddb_config.h	178 B
mcheck.h	2.38 KB
memory.h	956 B
menu.h	11.6 KB
[ misc ]	-
mntent.h	3.28 KB
monetary.h	1.92 KB
mqueue.h	4.5 KB
[ mtd ]	-
[ mysql ]	-
nc_tparm.h	4.67 KB
[ ncurses ]	-
ncurses.h	96.82 KB
ncurses_dll.h	3.95 KB
[ ncursesw ]	-
ndbm.h	2.39 KB
[ net ]	-
[ netash ]	-
[ netatalk ]	-
[ netax25 ]	-
netdb.h	27.79 KB
[ neteconet ]	-
[ netinet ]	-
[ netipx ]	-
[ netiucv ]	-
[ netpacket ]	-
[ netrom ]	-
[ netrose ]	-
[ nfs ]	-
nl_types.h	1.71 KB
nss.h	14.07 KB
obstack.h	20.81 KB
[ openssl ]	-
panel.h	4.41 KB
paths.h	2.91 KB
[ pcp ]	-
pcre.h	30.97 KB
pcre2.h	46.15 KB
pcre2posix.h	6.52 KB
pcre_scanner.h	6.45 KB
pcre_stringpiece.h	6.16 KB
pcrecpp.h	25.91 KB
pcrecpparg.h	6.62 KB
pcreposix.h	5.74 KB
png.h	139.51 KB
pngconf.h	22.31 KB
pnglibconf.h	7.43 KB
poll.h	22 B
powercap.h	1.62 KB
pr29.h	2.19 KB
printf.h	6.71 KB
proc_service.h	3.4 KB
profile.h	11.87 KB
[ protobuf-c ]	-
[ protocols ]	-
pthread.h	47.39 KB
pty.h	1.53 KB
punycode.h	9.3 KB
pwd.h	6.17 KB
[ python3.9 ]	-
[ rdma ]	-
re_comp.h	963 B
regex.h	25.3 KB
regexp.h	1.41 KB
resolv.h	12.1 KB
[ rpc ]	-
sched.h	4.92 KB
[ scsi ]	-
search.h	5.32 KB
[ security ]	-
[ selinux ]	-
semaphore.h	3.38 KB
[ sepol ]	-
setjmp.h	3.12 KB
sgtty.h	1.31 KB
shadow.h	5.34 KB
signal.h	12.73 KB
[ sound ]	-
spawn.h	8.1 KB
stab.h	264 B
stdc-predef.h	2.24 KB
stdint.h	8.28 KB
stdio.h	30.67 KB
stdio_ext.h	2.73 KB
stdlib.h	35.46 KB
string.h	19 KB
stringprep.h	9.53 KB
strings.h	4.64 KB
[ sys ]	-
syscall.h	25 B
sysexits.h	5.11 KB
syslog.h	24 B
[ sysprof-4 ]	-
tar.h	3.7 KB
term.h	40.95 KB
term_entry.h	8.9 KB
termcap.h	3.39 KB
termio.h	214 B
termios.h	3.51 KB
tgmath.h	39.24 KB
thread_db.h	15.65 KB
threads.h	7.51 KB
tic.h	14.48 KB
tiff.h	46.33 KB
tiffconf-64.h	3.19 KB
tiffconf.h	250 B
tiffio.h	24.13 KB
tiffio.hxx	1.62 KB
tiffvers.h	410 B
time.h	14.5 KB
tld.h	4.85 KB
ttyent.h	2.44 KB
uchar.h	1.96 KB
ucontext.h	1.99 KB
ulimit.h	1.55 KB
unctrl.h	3.1 KB
[ unicode ]	-
unistd.h	43.45 KB
utime.h	1.86 KB
utmp.h	3.15 KB
utmpx.h	4 KB
values.h	1.91 KB
verto-module.h	6.48 KB
verto.h	18.98 KB
[ video ]	-
wait.h	22 B
wchar.h	31.39 KB
wctype.h	5.42 KB
[ webp ]	-
wordexp.h	2.44 KB
[ xcb ]	-
[ xen ]	-
zconf.h	15.88 KB
zlib.h	94 KB

Edit: fpu_control.h

/* FPU control word bits.  x86 version.
   Copyright (C) 1993-2021 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Olaf Flebbe.

The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

#ifndef _FPU_CONTROL_H
#define _FPU_CONTROL_H	1

/* Note that this file sets on x86-64 only the x87 FPU, it does not
   touch the SSE unit.  */

/* Here is the dirty part. Set up your 387 through the control word
 * (cw) register.
 *
 *     15-13    12  11-10  9-8     7-6     5    4    3    2    1    0
 * | reserved | IC | RC  | PC | reserved | PM | UM | OM | ZM | DM | IM
 *
 * IM: Invalid operation mask
 * DM: Denormalized operand mask
 * ZM: Zero-divide mask
 * OM: Overflow mask
 * UM: Underflow mask
 * PM: Precision (inexact result) mask
 *
 * Mask bit is 1 means no interrupt.
 *
 * PC: Precision control
 * 11 - round to extended precision
 * 10 - round to double precision
 * 00 - round to single precision
 *
 * RC: Rounding control
 * 00 - rounding to nearest
 * 01 - rounding down (toward - infinity)
 * 10 - rounding up (toward + infinity)
 * 11 - rounding toward zero
 *
 * IC: Infinity control
 * That is for 8087 and 80287 only.
 *
 * The hardware default is 0x037f which we use.
 */

#include <features.h>

/* masking of interrupts */
#define _FPU_MASK_IM  0x01
#define _FPU_MASK_DM  0x02
#define _FPU_MASK_ZM  0x04
#define _FPU_MASK_OM  0x08
#define _FPU_MASK_UM  0x10
#define _FPU_MASK_PM  0x20

/* precision control */
#define _FPU_EXTENDED 0x300	/* libm requires double extended precision.  */
#define _FPU_DOUBLE   0x200
#define _FPU_SINGLE   0x0

/* rounding control */
#define _FPU_RC_NEAREST 0x0    /* RECOMMENDED */
#define _FPU_RC_DOWN    0x400
#define _FPU_RC_UP      0x800
#define _FPU_RC_ZERO    0xC00

#define _FPU_RESERVED 0xF0C0  /* Reserved bits in cw */

/* The fdlibm code requires strict IEEE double precision arithmetic,
   and no interrupts for exceptions, rounding to nearest.  */

#define _FPU_DEFAULT  0x037f

/* IEEE:  same as above.  */
#define _FPU_IEEE     0x037f

/* Type of the control word.  */
typedef unsigned int fpu_control_t __attribute__ ((__mode__ (__HI__)));

/* Macros for accessing the hardware control word.  "*&" is used to
   work around a bug in older versions of GCC.  __volatile__ is used
   to support combination of writing the control register and reading
   it back.  Without __volatile__, the old value may be used for reading
   back under compiler optimization.

Note that the use of these macros is not sufficient anymore with
   recent hardware nor on x86-64.  Some floating point operations are
   executed in the SSE/SSE2 engines which have their own control and
   status register.  */
#define _FPU_GETCW(cw) __asm__ __volatile__ ("fnstcw %0" : "=m" (*&cw))
#define _FPU_SETCW(cw) __asm__ __volatile__ ("fldcw %0" : : "m" (*&cw))

/* Default control word set at startup.  */
extern fpu_control_t __fpu_control;

#endif	/* fpu_control.h */

GOLDEN HOUR

Edit: fpu_control.h

TERMINAL