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Index: contrib/compiler-rt/lib/builtins/multc3.c
===================================================================
--- /dev/null
+++ contrib/compiler-rt/lib/builtins/multc3.c
@@ -0,0 +1,73 @@
+/* ===-- multc3.c - Implement __multc3 -------------------------------------===
+ *
+ * The LLVM Compiler Infrastructure
+ *
+ * This file is dual licensed under the MIT and the University of Illinois Open
+ * Source Licenses. See LICENSE.TXT for details.
+ *
+ * ===----------------------------------------------------------------------===
+ *
+ * This file implements __multc3 for the compiler_rt library.
+ *
+ * ===----------------------------------------------------------------------===
+ */
+
+#include "int_lib.h"
+#include "int_math.h"
+
+/* Returns: the product of a + ib and c + id */
+
+COMPILER_RT_ABI long double _Complex
+__multc3(long double __a, long double __b, long double __c, long double __d)
+{
+ long double __ac = __a * __c;
+ long double __bd = __b * __d;
+ long double __ad = __a * __d;
+ long double __bc = __b * __c;
+ long double _Complex z;
+ __real__ z = __ac - __bd;
+ __imag__ z = __ad + __bc;
+ if (crt_isnan(__real__ z) && crt_isnan(__imag__ z))
+ {
+ int __recalc = 0;
+ if (crt_isinf(__a) || crt_isinf(__b))
+ {
+ __a = crt_copysignl(crt_isinf(__a) ? 1 : 0, __a);
+ __b = crt_copysignl(crt_isinf(__b) ? 1 : 0, __b);
+ if (crt_isnan(__c))
+ __c = crt_copysignl(0, __c);
+ if (crt_isnan(__d))
+ __d = crt_copysignl(0, __d);
+ __recalc = 1;
+ }
+ if (crt_isinf(__c) || crt_isinf(__d))
+ {
+ __c = crt_copysignl(crt_isinf(__c) ? 1 : 0, __c);
+ __d = crt_copysignl(crt_isinf(__d) ? 1 : 0, __d);
+ if (crt_isnan(__a))
+ __a = crt_copysignl(0, __a);
+ if (crt_isnan(__b))
+ __b = crt_copysignl(0, __b);
+ __recalc = 1;
+ }
+ if (!__recalc && (crt_isinf(__ac) || crt_isinf(__bd) ||
+ crt_isinf(__ad) || crt_isinf(__bc)))
+ {
+ if (crt_isnan(__a))
+ __a = crt_copysignl(0, __a);
+ if (crt_isnan(__b))
+ __b = crt_copysignl(0, __b);
+ if (crt_isnan(__c))
+ __c = crt_copysignl(0, __c);
+ if (crt_isnan(__d))
+ __d = crt_copysignl(0, __d);
+ __recalc = 1;
+ }
+ if (__recalc)
+ {
+ __real__ z = CRT_INFINITY * (__a * __c - __b * __d);
+ __imag__ z = CRT_INFINITY * (__a * __d + __b * __c);
+ }
+ }
+ return z;
+}
Index: lib/libcompiler_rt/Makefile
===================================================================
--- lib/libcompiler_rt/Makefile
+++ lib/libcompiler_rt/Makefile
@@ -107,6 +107,7 @@
mulvdi3 \
mulvsi3 \
mulvti3 \
+ multc3 \
mulxc3 \
negdf2 \
negdi2 \

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