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annotate m4/ffsll.m4 @ 40231:9b3c79fdfe0b

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strtod: fix clash with strtold Problem reported for RHEL 5 by Jesse Caldwell (Bug#34817). * lib/strtod.c (compute_minus_zero, minus_zero): Simplify by remving the macro / external variable, and having just a function. User changed. This avoids the need for an external variable that might clash.
author Paul Eggert <eggert@cs.ucla.edu>
date Mon, 11 Mar 2019 16:40:29 -0700
parents b06060465f09
children
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1 # ffsll.m4 serial 1
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b06060465f09 maint: Run 'make update-copyright'
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2 dnl Copyright (C) 2011-2019 Free Software Foundation, Inc.
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3 dnl This file is free software; the Free Software Foundation
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4 dnl gives unlimited permission to copy and/or distribute it,
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5 dnl with or without modifications, as long as this notice is preserved.
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6
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7 AC_DEFUN([gl_FUNC_FFSLL],
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8 [
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9 AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
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10
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11 dnl Persuade glibc <string.h> to declare ffsll().
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12 AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
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13
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14 AC_CHECK_FUNCS_ONCE([ffsll])
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15 if test $ac_cv_func_ffsll = no; then
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16 HAVE_FFSLL=0
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17 fi
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18 ])