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43 lines
1.2 KiB
C++
43 lines
1.2 KiB
C++
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// This file is part of OpenCV project.
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// It is subject to the license terms in the LICENSE file found in the top-level directory
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// of this distribution and at http://opencv.org/license.html.
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#ifndef AARCH64_BAREMETAL_PORT_HPP
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#define AARCH64_BAREMETAL_PORT_HPP
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#include <malloc.h> // Needed for `memalign`.
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#include <sys/errno.h> // Needed for `ENOMEM`.
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// -std=c++11 is missing the following definitions when targeting
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// semihosting on aarch64.
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#if __cplusplus == 201103L
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#include <cmath>
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#define M_PI 3.14159265358979323846
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#define M_SQRT2 1.41421356237309504880
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namespace std {
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inline double cbrt(double x) {
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return ::cbrt(x);
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}
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inline double copysign(double mag, double sgn) {
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return ::copysign(mag, sgn);
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}
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} //namespace std
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#endif // __cplusplus == 201103L
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extern "C" {
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// Redirect the implementation of `posix_memalign` to `memalign`
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// as the former is
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// missing at link time. https://pubs.opengroup.org/onlinepubs/9699919799/functions/posix_memalign.html
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__attribute__((weak)) int posix_memalign(void **memptr, size_t alignment, size_t size) {
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void * ptr = memalign(alignment, size);
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if (ptr != NULL) {
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*memptr = ptr;
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return 0;
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}
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return ENOMEM;
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}
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} // extern "C"
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#endif
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