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Paul Eggert
a3fd683de3
* 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'.
33 lines
1.1 KiB
Plaintext
33 lines
1.1 KiB
Plaintext
# sinhf.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_SINHF],
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[
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AC_REQUIRE([gl_MATH_H_DEFAULTS])
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AC_REQUIRE([gl_FUNC_SINH])
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dnl Persuade glibc <math.h> to declare sinhf().
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AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
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dnl Test whether sinhf() exists. Assume that sinhf(), if it exists, is
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dnl defined in the same library as sinh().
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save_LIBS="$LIBS"
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LIBS="$LIBS $SINH_LIBM"
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AC_CHECK_FUNCS([sinhf])
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LIBS="$save_LIBS"
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if test $ac_cv_func_sinhf = yes; then
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SINHF_LIBM="$SINH_LIBM"
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else
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HAVE_SINHF=0
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dnl If the function is declared but does not appear to exist, it may be
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dnl defined as an inline function. In order to avoid a conflict, we have
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dnl to define rpl_sinhf, not sinhf.
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AC_CHECK_DECLS([sinhf], [REPLACE_SINHF=1], , [[#include <math.h>]])
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SINHF_LIBM="$SINH_LIBM"
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fi
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AC_SUBST([SINHF_LIBM])
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])
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