added C++ <complex>

src/libc/include/complex.h

@@ -1,13 +1,17 @@
 #ifndef _COMPLEX_H
 #define _COMPLEX_H
 
+#ifdef __cplusplus
+
+#include <complex>
+
+#else /* __cplusplus */
+
 #ifndef __FAST_MATH__
 #warning "-ffast-math is required for complex multiplication and division to work properly at this time"
 #endif
 
-#ifndef __cplusplus
 #define complex _Complex
-#endif
 
 #ifdef _Imaginary
 #define imaginary _Imaginary
@@ -121,4 +125,6 @@ double _Complex catanh(double _Complex);
 float _Complex catanhf(float _Complex);
 long double _Complex catanhl(long double _Complex);
 
+#endif /* __cplusplus */
+
 #endif /* _COMPLEX_H */

src/libc/include/tgmath.h

@@ -4,6 +4,7 @@
 #ifdef __cplusplus
 
 #include <cmath>
+#include <complex>
 
 #else /* __cplusplus */
 

src/libcxx/header_test.cpp

@@ -2,6 +2,7 @@
 #include <algorithm>
 #include <bit>
 #include <cassert>
+#include <ccomplex>
 #include <cctype>
 #include <cerrno>
 #include <cfenv>
@@ -10,6 +11,7 @@
 #include <ciso646>
 #include <climits>
 #include <cmath>
+#include <complex>
 #if __cplusplus >= 201907L
 #include <concepts>
 #endif // __cplusplus >= 201907L
@@ -45,6 +47,7 @@
 #include <assert.h>
 #include <byteswap.h>
 #include <cdefs.h>
+#include <complex.h>
 #include <ctype.h>
 #include <errno.h>
 #include <fenv.h>

src/libcxx/include/__config

@@ -14,5 +14,6 @@
 #define _EZCXX_NODEBUG __attribute__((__nodebug__))
 #define _EZCXX_TEMPLATE_VIS __attribute__ ((__type_visibility__("default")))
 #define _EZCXX_LIFETIMEBOUND [[_Clang::__lifetimebound__]]
+#define _EZCXX_INLINE_VISIBILITY _EZCXX_HIDE_FROM_ABI
 
 #endif // _EZCXX_CONFIG

src/libcxx/include/ccomplex

@@ -0,0 +1,9 @@
+// -*- C++ -*-
+#ifndef _EZCXX_CCOMPLEX
+#define _EZCXX_CCOMPLEX
+
+#include <complex>
+
+#pragma clang system_header
+
+#endif // _EZCXX_CCOMPLEX