tests/seq/seq-long-double.sh

   1 #!/bin/sh
   2 # Test for this fix: 461231f022bdb3ee392622d31dc475034adceeb2.
   3 # Ensure that seq prints exactly two numbers for a 2-number integral
   4 # range at the limit of floating point precision.
   5
   6 # Copyright (C) 2008-2024 Free Software Foundation, Inc.
   7
   8 # This program is free software: you can redistribute it and/or modify
   9 # it under the terms of the GNU General Public License as published by
  10 # the Free Software Foundation, either version 3 of the License, or
  11 # (at your option) any later version.
  12
  13 # This program is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU General Public License for more details.
  17
  18 # You should have received a copy of the GNU General Public License
  19 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
  20
  21 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  22 print_ver_ seq
  23 getlimits_
  24
  25 # Run this test only with glibc and sizeof (long double) > sizeof (double).
  26 # Otherwise, there are known failures.
  27 cat <<\EOF > long.c
  28 #include <features.h>
  29 #if defined __GNU_LIBRARY__ && __GLIBC__ >= 2
  30 int foo[sizeof (long double) - sizeof (double) - 1];
  31 #else
  32 "run this test only with glibc"
  33 #endif
  34 EOF
  35 $CC -c long.c \
  36   || skip_ \
  37      'this test runs only on systems with glibc and long double != double'
  38
  39 a=$INTMAX_MAX
  40 b=$INTMAX_OFLOW
  41
  42 seq $a $b > out || fail=1
  43 printf "$a\n$b\n" > exp || fail=1
  44 compare exp out || fail=1
  45
  46 Exit $fail