-// static double _fg_lin(double v) { return v; };
-static double _fg_inv(double v) { return (v == 0) ? 1e99 : 1/v; };
-static double _fg_abs(double v) { return (v >= 0) ? v : -v; };
-static double _fg_sqrt(double v) { return (v < 0) ? sqrt(-v) : sqrt(v); };
-static double _fg_log10(double v) { return (v < 1) ? 0 : log10(v); };
-static double _fg_log(double v) { return (v < 1) ? 0 : log(v); };
-// static double _fg_sqr(double v) { return pow(v, 2); };
-// static double _fg_pow3(double v) { return pow(v, 3); };
+// static double _fg_lin(double v) { return v; }
+static double _fg_inv(double v) { return (v == 0) ? 1e99 : 1/v; }
+static double _fg_abs(double v) { return (v >= 0) ? v : -v; }
+static double _fg_sqrt(double v) { return (v < 0) ? sqrt(-v) : sqrt(v); }
+static double _fg_log10(double v) { return (v < 1) ? 0 : log10(v); }
+static double _fg_log(double v) { return (v < 1) ? 0 : log(v); }
+// static double _fg_sqr(double v) { return pow(v, 2); }
+// static double _fg_pow3(double v) { return pow(v, 3); }