1 files changed, 41 insertions, 0 deletions
diff --git a/current/sources/android/support/src/support_preinclude.h b/current/sources/android/support/src/support_preinclude.h
new file mode 100644
index 000000000..bf090b0d2
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+++ b/current/sources/android/support/src/support_preinclude.h
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+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#pragma once
+
+// Declare cimag and creal for use by __ldexp_cexp. libandroid_runtime doesn't
+// really need __ldexp_cexp, but it does need __ldexp_exp, and both functions
+// are defined in the same C file. complex.h doesn't declare cimag/creal when
+// building libandroid_support, because the functions are only available
+// starting with M, and libandroid_support is compiled for the oldest supported
+// NDK API.
+//
+// The two functions are trivial (and have __builtin_{cimag,creal}
+// equivalents). Clang inlines calls to these functions even with -O0.
+double cimag(double _Complex z);
+double creal(double _Complex z);