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-rw-r--r--winsup/cygwin/math/fabsl.c18
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diff --git a/winsup/cygwin/math/fabsl.c b/winsup/cygwin/math/fabsl.c
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+++ b/winsup/cygwin/math/fabsl.c
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+/**
+ * This file has no copyright assigned and is placed in the Public Domain.
+ * This file is part of the mingw-w64 runtime package.
+ * No warranty is given; refer to the file DISCLAIMER.PD within this package.
+ */
+long double fabsl (long double x);
+
+long double
+fabsl (long double x)
+{
+#if defined(__x86_64__) || defined(_AMD64_) || defined(__i386__) || defined(_X86_)
+ long double res = 0.0L;
+ asm ("fabs;" : "=t" (res) : "0" (x));
+ return res;
+#elif defined(__arm__) || defined(_ARM_)
+ return __builtin_fabsl (x);
+#endif /* defined(__x86_64__) || defined(_AMD64_) || defined(__i386__) || defined(_X86_) */
+}