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55 lines
2.5 KiB
55 lines
2.5 KiB
# Ceres Solver - A fast non-linear least squares minimizer
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# Copyright 2017 Google Inc. All rights reserved.
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# http://ceres-solver.org/
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# * Redistributions of source code must retain the above copyright notice,
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# this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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# * Neither the name of Google Inc. nor the names of its contributors may be
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# used to endorse or promote products derived from this software without
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# specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# Author: alexs.mac@gmail.com (Alex Stewart)
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# Microsoft deprecated the POSIX Bessel functions: j[0,1,n]() in favour
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# of _j[0,1,n](), it appears since at least MSVC 2005 [1]. This function
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# checks if the underscore prefixed versions of the Bessel functions are
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# defined, and sets ${HAVE_UNDERSCORE_PREFIXED_BESSEL_FUNCTIONS_VAR} to
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# TRUE if they do.
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#
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# [1] https://msdn.microsoft.com/en-us/library/ms235384(v=vs.100).aspx
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function(check_if_underscore_prefixed_bessel_functions_exist
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HAVE_UNDERSCORE_PREFIXED_BESSEL_FUNCTIONS_VAR)
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include(CheckCXXSourceCompiles)
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check_cxx_source_compiles(
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"#include <math.h>
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int main(int argc, char * argv[]) {
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double result;
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result = _j0(1.2345);
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result = _j1(1.2345);
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result = _jn(2, 1.2345);
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return 0;
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}"
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HAVE_UNDERSCORE_PREFIXED_BESSEL_FUNCTIONS)
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set(${HAVE_UNDERSCORE_PREFIXED_BESSEL_FUNCTIONS_VAR}
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${HAVE_UNDERSCORE_PREFIXED_BESSEL_FUNCTIONS}
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PARENT_SCOPE)
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endfunction()
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