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-rw-r--r--newlib/libm/mathfp/sf_fabs.c45
1 files changed, 45 insertions, 0 deletions
diff --git a/newlib/libm/mathfp/sf_fabs.c b/newlib/libm/mathfp/sf_fabs.c
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+++ b/newlib/libm/mathfp/sf_fabs.c
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+
+/* @(#)z_fabsf.c 1.0 98/08/13 */
+/******************************************************************
+ * Floating-Point Absolute Value
+ *
+ * Input:
+ * x - floating-point number
+ *
+ * Output:
+ * absolute value of x
+ *
+ * Description:
+ * fabs computes the absolute value of a floating point number.
+ *
+ *****************************************************************/
+
+#include "fdlibm.h"
+#include "zmath.h"
+
+float
+_DEFUN (fabsf, (float),
+ float x)
+{
+ switch (numtestf (x))
+ {
+ case NAN:
+ errno = EDOM;
+ return (x);
+ case INF:
+ errno = ERANGE;
+ return (x);
+ case 0:
+ return (0.0);
+ default:
+ return (x < 0.0 ? -x : x);
+ }
+}
+
+#ifdef _DOUBLE_IS_32BITS
+double fabs (double x)
+{
+ return (double) fabsf ((float) x);
+}
+
+#endif /* defined(_DOUBLE_IS_32BITS) */