move __sincos(f) implementations to library

include/math.h

@@ -71,30 +71,27 @@ __MP__END_DECLS
 
 #endif /* __MP_LEGACY_SUPPORT_LLROUND__ */
 
+/*
+ * Include the next math.h, which might be from the primary system or
+ * it might be within GCC's c or c++ (yup!) headers
+ */
+
+#include_next <math.h>
+
 #if __MP_LEGACY_SUPPORT_COSSIN__
 
 /* Following is borrowed from math.h on macOS 10.9+ */
 
 /*  __sincos and __sincosf were introduced in OSX 10.9 and iOS 7.0.  When
     targeting an older system, we simply split them up into discrete calls
     to sin( ) and cos( ).  */
-void __sincosf(float __x, float *__sinp, float *__cosp) {
-  *__sinp = sinf(__x);
-  *__cosp = cosf(__x);
-}
-void __sincos(double __x, double *__sinp, double *__cosp) {
-  *__sinp = sin(__x);
-  *__cosp = cos(__x);
-}
-
-#endif /* __MP_LEGACY_SUPPORT_COSSIN__ */
 
-/*
- * Include the next math.h, which might be from the primary system or
- * it might be within GCC's c or c++ (yup!) headers
- */
+__MP__BEGIN_DECLS
+extern void __sincosf(float __x, float *__sinp, float *__cosp);
+extern void __sincos(double __x, double *__sinp, double *__cosp);
+__MP__END_DECLS
 
-#include_next <math.h>
+#endif /* __MP_LEGACY_SUPPORT_COSSIN__ */
 
 #if __MP_LEGACY_SUPPORT_LLROUND__
 

src/sincos.c

@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2010 Chris Jones <[email protected]>
+ * Copyright (c) 2019 Michael Dickens <[email protected]>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* MP support header */
+#include <math.h>
+
+#if __MP_LEGACY_SUPPORT_COSSIN__
+
+/* Following is borrowed from math.h on macOS 10.9+ */
+
+/*  __sincos and __sincosf were introduced in OSX 10.9 and iOS 7.0.  When
+    targeting an older system, we simply split them up into discrete calls
+    to sin( ) and cos( ).  */
+void __sincosf(float __x, float *__sinp, float *__cosp) {
+  *__sinp = sinf(__x);
+  *__cosp = cosf(__x);
+}
+void __sincos(double __x, double *__sinp, double *__cosp) {
+  *__sinp = sin(__x);
+  *__cosp = cos(__x);
+}
+
+#endif /* __MP_LEGACY_SUPPORT_COSSIN__ */