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-rw-r--r--newlib/libm/mathfp/s_ceil.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/newlib/libm/mathfp/s_ceil.c b/newlib/libm/mathfp/s_ceil.c
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index 00000000000..c6ecbe32351
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+++ b/newlib/libm/mathfp/s_ceil.c
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+
+/* @(#)z_ceil.c 1.0 98/08/13 */
+/*****************************************************************
+ * ceil
+ *
+ * Input:
+ * x - floating point value
+ *
+ * Output:
+ * Smallest integer greater than x.
+ *
+ * Description:
+ * This routine returns the smallest integer greater than x.
+ *
+ *****************************************************************/
+
+#include "fdlibm.h"
+#include "zmath.h"
+
+#ifndef _DOUBLE_IS_32BITS
+
+double
+_DEFUN (ceil, (double),
+ double x)
+{
+ double f, y;
+
+ y = modf (x, &f);
+
+ if (y == 0.0)
+ return (x);
+ else if (x > -1.0 && x < 1.0)
+ return (x > 0 ? 1.0 : 0.0);
+ else
+ return (x > 0 ? f + 1.0 : f);
+}
+
+#endif /* _DOUBLE_IS_32BITS */