93 lines
3.1 KiB
Bash
Executable file
93 lines
3.1 KiB
Bash
Executable file
#!/bin/sh
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# Test od on floating-point values.
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# Copyright (C) 2010-2025 Free Software Foundation, Inc.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
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print_ver_ od printf
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export LC_ALL=C
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# Test for a bug in coreutils up through 8.7: od was losing
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# information when asked to parse floating-point values. The numeric
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# tests are valid only on Intel-like hosts, but that should be good
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# enough to detect regressions, as they are designed to succeed on
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# non-Intel-like hosts. Also, test for another bug in coreutils 8.7
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# on x86: sometimes there was no space between the columns.
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set x $(echo aaaabaaa | tr ab '\376\377' | od -t fF) ||
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fail=1
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case "$*" in
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*0-*) fail=1;;
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esac
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case $3,$4 in
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-1.694740e+38,-1.694740e+38) fail=1;;
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esac
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set x $(echo aaaaaaaabaaaaaaa | tr ab '\376\377' | od -t fD) ||
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fail=1
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case "$*" in
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*0-*) fail=1;;
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esac
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case $3,$4 in
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-5.314010372517808e+303,-5.314010372517808e+303) fail=1;;
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esac
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set x $(echo aaaaaaaaaaaaaaaabaaaaaaaaaaaaaaa | tr ab '\376\377' | od -t fL) ||
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fail=1
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case "$*" in
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*0-*) fail=1;;
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esac
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case $3,$4 in
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-1.023442870282055988e+4855,-1.023442870282055988e+4855) fail=1;;
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esac
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# Ensure od doesn't crash as it did on glibc <= 2.5:
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# https://sourceware.org/bugzilla/show_bug.cgi?id=4586
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set x $(printf 00000000ff000000 | tr 0f '\000\377' | od -t fL) || fail=1
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# With coreutils <= 8.7 we used to print "nan" for the above invalid value.
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# However since v8.7-22-ga71c22f we deferred to the system printf routines
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# through the use of the ftoastr module. So the following check would only
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# be valid on x86_64 if we again handle the conversion internally or
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# if this glibc bug is resolved:
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# https://sourceware.org/bugzilla/show_bug.cgi?id=17661
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#case "$*" in
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#*nan*) ;;
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#*) fail=1;;
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#esac
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# Check Half precision IEEE 16 bit float
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if grep '^#define FLOAT16_SUPPORTED 1' "$CONFIG_HEADER" >/dev/null; then
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for fmt in '-tfH' '-tf2'; do
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od_out=$(env printf '\x3C\x00\x3C\x00' | od --end=big -An $fmt | tr -d ' ')
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test "$od_out" = '11' || fail=1
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done
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else
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echo "od: this system doesn't provide a 'fH' floating point type" > exp_err
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returns_ 1 od -tfH /dev/null 2>err || fail=1
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compare exp_err err || fail=1
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fi
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# Check Half precision Brain 16 bit float
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if grep '^#define BF16_SUPPORTED 1' "$CONFIG_HEADER" >/dev/null; then
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od_out=$(env printf '\x3F\x80\x3F\x80' | od --end=big -An -tfB | tr -d ' ')
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test "$od_out" = '11' || fail=1
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else
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echo "od: this system doesn't provide a 'fB' floating point type" > exp_err
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returns_ 1 od -tfB /dev/null 2>err || fail=1
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compare exp_err err || fail=1
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fi
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Exit $fail
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