1 files changed, 47 insertions, 51 deletions

diff --git a/contrib/libf2c/libF77/z_log.c b/contrib/libf2c/libF77/z_log.c
index 9dcc7f7..f56b12e 100644
--- a/contrib/libf2c/libF77/z_log.c
+++ b/contrib/libf2c/libF77/z_log.c
@@ -1,63 +1,59 @@
 #include "f2c.h"
 
-#ifdef KR_headers
-double log(), f__cabs(), atan2();
-VOID z_log(r, z) doublecomplex *r, *z;
-#else
 #undef abs
 #include "math.h"
-extern double f__cabs(double, double);
-void z_log(doublecomplex *r, doublecomplex *z)
-#endif
+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;
+  double s, s0, t, t2, u, v;
+  double zi = z->i, zr = z->r;
 
-	r->i = atan2(zi, zr);
+  r->i = atan2 (zi, zr);
 #ifdef Pre20000310
-	r->r = log( f__cabs( zr, zi ) );
+  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 {
+  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
+      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
+}