pseudocode: replace C-style casts with static_cast

Change-Id: Ic362e5cbc607d1b7560c09326fcebcba606454ce
Signed-off-by: Kevin Petit <kevin.petit@arm.com>
diff --git a/pseudocode/operators/tables/ERF.tosac b/pseudocode/operators/tables/ERF.tosac
index 0ff29ff..bf94349 100644
--- a/pseudocode/operators/tables/ERF.tosac
+++ b/pseudocode/operators/tables/ERF.tosac
@@ -8,7 +8,7 @@
 // by a licensing agreement from ARM Limited.
 
 int16_t erf_reference(int16_t x) { // input x range is -256 to + 256 inclusive
-    F64 v = (double)x / (double)64;
+    F64 v = static_cast<double>(x) / static_cast<double>(64);
     v = erf(v);
     return round_to_nearest_int(32768.0 * v);
 }
diff --git a/pseudocode/operators/tables/SIGMOID.tosac b/pseudocode/operators/tables/SIGMOID.tosac
index dad1e1d..c13d5ee 100644
--- a/pseudocode/operators/tables/SIGMOID.tosac
+++ b/pseudocode/operators/tables/SIGMOID.tosac
@@ -8,7 +8,7 @@
 // by a licensing agreement from ARM Limited.
 
 int16_t sigmoid_reference(int16_t x) { // input x range is -256 to + 256 inclusive
-    fp64_t v = (fp64_t)x / (fp64_t)16;
+    fp64_t v = static_cast<fp64_t>(x) / static_cast<fp64_t>(16);
     v = 1.0/(1.0 + exp(-v));
     return round_to_nearest_int(32768.0 * v);
 }
diff --git a/pseudocode/operators/tables/TANH.tosac b/pseudocode/operators/tables/TANH.tosac
index b45f121..5551593 100644
--- a/pseudocode/operators/tables/TANH.tosac
+++ b/pseudocode/operators/tables/TANH.tosac
@@ -8,7 +8,7 @@
 // by a licensing agreement from ARM Limited.
 
 int16_t tanh_reference(int16_t x) {  // input x range is -256 to +256 inclusive
-    fp64_t v = (fp64_t)x/(fp64_t)32;
+    fp64_t v = static_cast<fp64_t>(x) / static_cast<fp64_t>(32);
     v = exp(-2.0*v);
     v = (1.0-v)/(1.0+v);
     return round_to_nearest_int(32768.0 * v);