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75 lines
2.7 KiB
Bash
75 lines
2.7 KiB
Bash
#!/bin/bash
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# Testing of double printf conversions.
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# Copyright (C) 2024-2025 Free Software Foundation, Inc.
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# This file is part of the GNU C Library.
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# The GNU C Library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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# The GNU C Library 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 GNU
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# Lesser General Public License for more details.
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# You should have received a copy of the GNU Lesser General Public
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# License along with the GNU C Library; if not, see
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# <https://www.gnu.org/licenses/>.
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set -e
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xprintf=$1; shift
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format=$1; shift
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common_objpfx=$1; shift
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test_program_prefix=$1; shift
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# For floating-point formats we need to use the bignum mode even if the
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# regular mode would do, because GAWK in the latter mode uses sprintf(3)
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# internally to process the conversion requested, so any bug in our code
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# would then be verified against itself, defeating the objective of doing
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# the verification against an independent implementation.
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AWK="${AWK:-awk} -M"
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status=77
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# Verify that AWK can handle the range required. It also catches:
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# "gawk: warning: -M ignored: MPFR/GMP support not compiled in"
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# message produced where bignum support is not there, which is the
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# only indication as the use of '-M' does not affect the exit status
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# in this case.
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ref="-1.79769313486231570814527423731704357e+308"
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val=$(echo "$ref" | $AWK '{ printf "%.35e\n", $1 }' 2>&1) &&
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test "$val" = "$ref" && status=0
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test $status -eq 0 || { echo "No working AWK found" && exit $status; }
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# Check for any additional conversions that AWK handles conditionally
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# according to its version and/or the environment it has been built in.
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# The 'A' and 'a' conversions are not suitable to use at this point, as
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# output produced by AWK is different apparently due to a subtlety in
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# rounding, so do not try them.
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declare -A conversion_disabled
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ref="-inf"
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for f in f F; do
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conversion_disabled[$f]=true
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val=$(echo "$ref" | $AWK '{ printf "%'$f'\n", $1 }' 2>&1) &&
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test "${val^^}" = "${ref^^}" && unset conversion_disabled[$f]
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done
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if test "${conversion_disabled[$format]+set}" = set; then
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echo Unsupported $format
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status=77
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else
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echo Verifying $format
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(set -o pipefail
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${test_program_prefix} \
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${common_objpfx}stdio-common/tst-printf-format-${xprintf}-double $format |
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$AWK -f tst-printf-format.awk 2>&1 |
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head -n 1 |
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sed "s/^/Conversion $format output error, first line:\n/") 2>&1 ||
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status=1
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fi
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exit $status
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