Import Upstream version 2.72.4
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135
glib/gnulib/gl_cv_func_printf_infinite/meson.build
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135
glib/gnulib/gl_cv_func_printf_infinite/meson.build
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# Copyright (C) 2002-2004, 2006-2018 Free Software Foundation, Inc.
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# This file is free software; the Free Software Foundation
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# gives unlimited permission to copy and/or distribute it,
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# with or without modifications, as long as this notice is preserved.
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# Test whether the *printf family of functions supports infinite and NaN
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# 'double' arguments and negative zero arguments in the %f, %e, %g
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# directives. (ISO C99, POSIX:2001)
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# Result is gl_cv_func_printf_infinite.
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printf_infinite_double_test = '''
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#include <stdio.h>
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#include <string.h>
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static int
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strisnan (const char *string, size_t start_index, size_t end_index)
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{
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if (start_index < end_index)
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{
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if (string[start_index] == '-')
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start_index++;
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if (start_index + 3 <= end_index
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&& memcmp (string + start_index, "nan", 3) == 0)
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{
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start_index += 3;
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if (start_index == end_index
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|| (string[start_index] == '(' && string[end_index - 1] == ')'))
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return 1;
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}
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}
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return 0;
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}
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static int
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have_minus_zero ()
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{
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static double plus_zero = 0.0;
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double minus_zero = - plus_zero;
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return memcmp (&plus_zero, &minus_zero, sizeof (double)) != 0;
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}
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static char buf[10000];
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static double zero = 0.0;
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int main ()
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{
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int result = 0;
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if (sprintf (buf, "%f", 1.0 / zero) < 0
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|| (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0))
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result |= 1;
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if (sprintf (buf, "%f", -1.0 / zero) < 0
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|| (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0))
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result |= 1;
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if (sprintf (buf, "%f", zero / zero) < 0
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|| !strisnan (buf, 0, strlen (buf)))
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result |= 2;
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if (sprintf (buf, "%e", 1.0 / zero) < 0
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|| (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0))
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result |= 4;
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if (sprintf (buf, "%e", -1.0 / zero) < 0
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|| (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0))
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result |= 4;
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if (sprintf (buf, "%e", zero / zero) < 0
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|| !strisnan (buf, 0, strlen (buf)))
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result |= 8;
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if (sprintf (buf, "%g", 1.0 / zero) < 0
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|| (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0))
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result |= 16;
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if (sprintf (buf, "%g", -1.0 / zero) < 0
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|| (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0))
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result |= 16;
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if (sprintf (buf, "%g", zero / zero) < 0
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|| !strisnan (buf, 0, strlen (buf)))
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result |= 32;
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/* This test fails on HP-UX 10.20. */
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if (have_minus_zero ())
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if (sprintf (buf, "%g", - zero) < 0
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|| strcmp (buf, "-0") != 0)
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result |= 64;
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return result;
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}
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'''
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if not meson.is_cross_build() or meson.has_exe_wrapper()
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run_result = cc.run(printf_infinite_double_test,
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name : 'printf supports infinite \'double\' arguments')
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gl_cv_func_printf_infinite = run_result.compiled() and run_result.returncode() == 0
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else
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if host_system in ['linux', 'android']
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gl_cv_func_printf_infinite = true
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elif (host_system.startswith ('freebsd1') or
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host_system.startswith ('freebsd2') or
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host_system.startswith ('freebsd3') or
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host_system.startswith ('freebsd4') or
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host_system.startswith ('freebsd5'))
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gl_cv_func_printf_infinite = false
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elif (host_system.startswith ('freebsd') or
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host_system.startswith ('kfreebsd'))
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gl_cv_func_printf_infinite = true
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elif (host_system.startswith ('darwin1') or
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host_system.startswith ('darwin2') or
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host_system.startswith ('darwin3') or
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host_system.startswith ('darwin4') or
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host_system.startswith ('darwin5'))
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gl_cv_func_printf_infinite = false
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elif host_system.startswith ('darwin')
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gl_cv_func_printf_infinite = true
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elif (host_system.startswith ('hpux7') or
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host_system.startswith ('hpux8') or
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host_system.startswith ('hpux9') or
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host_system.startswith ('hpux10'))
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gl_cv_func_printf_infinite = false
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elif host_system.startswith ('hpux')
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gl_cv_func_printf_infinite = true
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elif (host_system.startswith ('netbsd1') or
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host_system.startswith ('netbsd2') or
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host_system.startswith ('netbsdelf1') or
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host_system.startswith ('netbsdelf2') or
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host_system.startswith ('netbsdaout1') or
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host_system.startswith ('netbsdaout2') or
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host_system.startswith ('netbsdcoff1') or
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host_system.startswith ('netbsdcoff2'))
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gl_cv_func_printf_infinite = false
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elif host_system.startswith ('netbsd')
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gl_cv_func_printf_infinite = true
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elif host_system.startswith ('beos')
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gl_cv_func_printf_infinite = true
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elif host_system.startswith ('windows')
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# Guess yes on MSVC, no on mingw.
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if cc.get_id() == 'msvc' or cc.get_id() == 'clang-cl'
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gl_cv_func_printf_infinite = true
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else
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gl_cv_func_printf_infinite = false
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endif
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else
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# If we don't know, assume the worst.
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gl_cv_func_printf_infinite = false
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endif
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endif
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