--- a/scripts/finance/fv.m
+++ b/scripts/finance/fv.m
@@ -39,13 +39,13 @@
 
 function v = fv (r, n, p, l, m)
 
-  if ((nargin < 3) || (nargin > 5))
+  if (nargin < 3 || nargin > 5)
     print_usage ();
   endif
 
-  if (! (isscalar (r) && (r > -1)))
+  if (! (isscalar (r) && r > -1))
     error ("fv: r must be a scalar > -1");
-  elseif (! (isscalar (n) && (n > 0)))
+  elseif (! (isscalar (n) && n > 0))
     error ("fv: n must be a positive scalar");
   elseif (! isscalar (p))
     error ("fv: p must be a scalar");

--- a/scripts/finance/fvl.m
+++ b/scripts/finance/fvl.m
@@ -36,9 +36,9 @@
     print_usage ();
   endif
 
-  if (! (isscalar (r) && (r > -1)))
+  if (! (isscalar (r) && r > -1))
     error ("fvl: r has to be a scalar > -1");
-  elseif (! (isscalar (n) && (n > 0)))
+  elseif (! (isscalar (n) && n > 0))
     error ("fvl: n has to be a positive scalar");
   elseif (! isscalar (l))
     error ("fvl: l has to be a scalar");

--- a/scripts/finance/nper.m
+++ b/scripts/finance/nper.m
@@ -39,11 +39,11 @@
 
 function n = nper (r, p, a, l, m)
 
-  if ((nargin < 3) || (nargin > 5))
+  if (nargin < 3 || nargin > 5)
     print_usage ();
   endif
 
-  if (! (isscalar (r) && (r > -1)))
+  if (! (isscalar (r) && r > -1))
     error ("nper: r must be a scalar > -1");
   elseif (! isscalar (p))
     error ("nper: p must be a scalar");

--- a/scripts/finance/npv.m
+++ b/scripts/finance/npv.m
@@ -38,7 +38,7 @@
 
 function v = npv (r, p, i)
 
-  if ((nargin < 2) || (nargin > 3))
+  if (nargin < 2 || nargin > 3)
     print_usage ();
   endif
 

--- a/scripts/finance/pv.m
+++ b/scripts/finance/pv.m
@@ -39,13 +39,13 @@
 
 function v = pv (r, n, p, l, m)
 
-  if ((nargin < 3) || (nargin > 5))
+  if (nargin < 3 || nargin > 5)
     print_usage ();
   endif
 
-  if (! (isscalar (r) && (r > -1)))
+  if (! (isscalar (r) && r > -1))
     error ("pv: r must be a scalar > -1");
-  elseif (! (isscalar (n) && (n > 0)))
+  elseif (! (isscalar (n) && n > 0))
     error ("pv: n must be a positive scalar");
   elseif (! isscalar (p))
     error ("pv: p must be a scalar");

--- a/scripts/finance/pvl.m
+++ b/scripts/finance/pvl.m
@@ -38,7 +38,7 @@
 
   if (! (isscalar (r) && (r > -1)))
     error ("pvl: r has to be a scalar > -1");
-  elseif (! (isscalar (n) && (n > 0)))
+  elseif (! (isscalar (n) && n > 0))
     error ("pvl: n has to be a positive scalar");
   elseif (! isscalar (p))
     error ("pvl: p has to be a scalar");

--- a/scripts/finance/rate.m
+++ b/scripts/finance/rate.m
@@ -36,11 +36,11 @@
 
 function r = rate (n, p, v, l, m)
 
-  if ((nargin < 3) || (nargin > 5))
+  if (nargin < 3 || nargin > 5)
     print_usage ();
   endif
 
-  if (! (isscalar (n) && (n > 0)))
+  if (! (isscalar (n) && n > 0))
     error ("rate: n must be a positive scalar");
   elseif (! isscalar (p))
     error ("rate: p must be a scalar");