#if defined(__IEEE_BIG_ENDIAN) || defined(__IEEE_LITTLE_ENDIAN)
-double DEFUN(copysign, (x, y), double x AND double y)
+double
+copysign (double x, double y)
{
__ieee_double_shape_type a,b;
b.value = y;
#else
-double DEFUN(copysign, (x, y), double x AND double y)
+double
+copysign (double x, double y)
{
if ((x < 0 && y > 0) || (x > 0 && y < 0))
return -x;