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* build-aux/gendocs.sh (version): * doc/gendocs_template: * doc/gendocs_template_min: * doc/gnulib.texi: * lib/version-etc.c (COPYRIGHT_YEAR): Update copyright dates by hand in templates and the like. * all files: Run 'make update-copyright'.
35 lines
1.0 KiB
Plaintext
35 lines
1.0 KiB
Plaintext
# copysignf.m4 serial 3
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dnl Copyright (C) 2011-2017 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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AC_DEFUN([gl_FUNC_COPYSIGNF],
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[
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AC_REQUIRE([gl_MATH_H_DEFAULTS])
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dnl Persuade glibc <math.h> to declare copysignf().
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AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
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dnl Determine COPYSIGNF_LIBM.
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gl_MATHFUNC([copysignf], [float], [(float, float)],
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[extern
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#ifdef __cplusplus
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"C"
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#endif
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float copysignf (float, float);
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])
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if test $gl_cv_func_copysignf_no_libm = yes \
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|| test $gl_cv_func_copysignf_in_libm = yes; then
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HAVE_COPYSIGNF=1
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dnl Also check whether it's declared.
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dnl IRIX 6.5 has copysignf() in libm but doesn't declare it in <math.h>.
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AC_CHECK_DECL([copysignf], , [HAVE_DECL_COPYSIGNF=0], [[#include <math.h>]])
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else
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HAVE_COPYSIGNF=0
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HAVE_DECL_COPYSIGNF=0
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COPYSIGNF_LIBM=
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fi
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AC_SUBST([COPYSIGNF_LIBM])
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])
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