1 files changed, 0 insertions, 59 deletions
diff --git a/gnu/lib/libf2c/libF77/z_log.c b/gnu/lib/libf2c/libF77/z_log.c
deleted file mode 100644
index f56b12ed7e3..00000000000
--- a/gnu/lib/libf2c/libF77/z_log.c
+++ /dev/null
@@ -1,59 +0,0 @@
-#include "f2c.h"
-
-#undef abs
-#include "math.h"
-extern double f__cabs (double, double);
-void
-z_log (doublecomplex * r, doublecomplex * z)
-{
-  double s, s0, t, t2, u, v;
-  double zi = z->i, zr = z->r;
-
-  r->i = atan2 (zi, zr);
-#ifdef Pre20000310
-  r->r = log (f__cabs (zr, zi));
-#else
-  if (zi < 0)
-    zi = -zi;
-  if (zr < 0)
-    zr = -zr;
-  if (zr < zi)
-    {
-      t = zi;
-      zi = zr;
-      zr = t;
-    }
-  t = zi / zr;
-  s = zr * sqrt (1 + t * t);
-  /* now s = f__cabs(zi,zr), and zr = |zr| >= |zi| = zi */
-  if ((t = s - 1) < 0)
-    t = -t;
-  if (t > .01)
-    r->r = log (s);
-  else
-    {
-
-#ifdef Comment
-
-      log (1 + x) = x - x ^ 2 / 2 + x ^ 3 / 3 - x ^ 4 / 4 + -...
-	= x (1 - x / 2 + x ^ 2 / 3 - +...)
-	[sqrt (y ^ 2 + z ^ 2) - 1] *[sqrt (y ^ 2 + z ^ 2) + 1] =
-	y ^ 2 + z ^ 2 - 1, so sqrt (y ^ 2 + z ^ 2) - 1 =
-	(y ^ 2 + z ^ 2 - 1) /[sqrt (y ^ 2 + z ^ 2) + 1]
-#endif /*Comment */
-	t = ((zr * zr - 1.) + zi * zi) / (s + 1);
-      t2 = t * t;
-      s = 1. - 0.5 * t;
-      u = v = 1;
-      do
-	{
-	  s0 = s;
-	  u *= t2;
-	  v += 2;
-	  s += u / v - t * u / (v + 1);
-	}
-      while (s > s0);
-      r->r = s * t;
-    }
-#endif
-}