diff options
Diffstat (limited to 'StdLib/LibC/Math/w_acos.c')
-rw-r--r-- | StdLib/LibC/Math/w_acos.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/StdLib/LibC/Math/w_acos.c b/StdLib/LibC/Math/w_acos.c new file mode 100644 index 0000000000..7e6aa10254 --- /dev/null +++ b/StdLib/LibC/Math/w_acos.c @@ -0,0 +1,40 @@ +/* @(#)w_acos.c 5.1 93/09/24 */
+/*
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Developed at SunPro, a Sun Microsystems, Inc. business.
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ */
+#include <LibConfig.h>
+#include <sys/EfiCdefs.h>
+#if defined(LIBM_SCCS) && !defined(lint)
+__RCSID("$NetBSD: w_acos.c,v 1.9 2002/05/26 22:01:59 wiz Exp $");
+#endif
+
+/*
+ * wrap_acos(x)
+ */
+
+#include "math.h"
+#include "math_private.h"
+
+
+double
+acos(double x) /* wrapper acos */
+{
+#ifdef _IEEE_LIBM
+ return __ieee754_acos(x);
+#else
+ double z;
+ z = __ieee754_acos(x);
+ if(_LIB_VERSION == _IEEE_ || isnan(x)) return z;
+ if(fabs(x)>1.0) {
+ return __kernel_standard(x,x,1); /* acos(|x|>1) */
+ } else
+ return z;
+#endif
+}
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