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-rw-r--r--newlib/libm/mathfp/sf_acos.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/newlib/libm/mathfp/sf_acos.c b/newlib/libm/mathfp/sf_acos.c
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+++ b/newlib/libm/mathfp/sf_acos.c
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+
+/* @(#)z_acosf.c 1.0 98/08/13 */
+/******************************************************************
+ * Arccosine
+ *
+ * Input:
+ * x - floating point value
+ *
+ * Output:
+ * arccosine of x
+ *
+ * Description:
+ * This routine returns the arccosine of x.
+ *
+ *****************************************************************/
+
+#include "fdlibm.h"
+#include "zmath.h"
+
+float
+_DEFUN (acosf, (float),
+ float x)
+{
+ return (asinef (x, 1));
+}
+
+#ifdef _DOUBLE_IS_32BITS
+double acos (double x)
+{
+ return (double) asinef ((float) x, 1);
+}
+
+#endif /* defined(_DOUBLE_IS_32BITS) */