import newlib-2000-02-17 snapshot

1 files changed, 43 insertions, 0 deletions

diff --git a/newlib/libm/mathfp/sf_floor.c b/newlib/libm/mathfp/sf_floor.c
new file mode 100644
index 000000000..1e0fb9e44
--- /dev/null
+++ b/newlib/libm/mathfp/sf_floor.c
@@ -0,0 +1,43 @@
+
+/* @(#)z_floorf.c 1.0 98/08/13 */
+/*****************************************************************
+ * floor 
+ *
+ * Input:
+ *   x  - floating point value
+ *
+ * Output:
+ *   Smallest integer less than x.
+ *
+ * Description:
+ *   This routine returns the smallest integer less than x.
+ *
+ *****************************************************************/
+
+#include "fdlibm.h"
+#include "zmath.h"
+
+float
+_DEFUN (floorf, (float),
+        float x)
+{
+  float f, y;
+
+  if (x > -1.0 && x < 1.0)
+    return (x >= 0 ? 0 : -1.0);
+
+  y = modff (x, &f);
+
+  if (y == 0.0)
+    return (x);
+
+  return (x >= 0 ? f : f - 1.0);
+}
+
+#ifdef _DOUBLE_IS_32BITS
+double floor (double x)
+{
+  return (double) floorf ((float) x);
+}
+
+#endif /* defined(_DOUBLE_IS_32BITS) */