Fix an issue with keyword SAVE-FORCE

Author: zhi-wang

.clang-tidy

@@ -0,0 +1,13 @@
+# for f in $(find src test -type f -name '*.cpp'); do clang-tidy --quiet --config-file=.clang-tidy -p BUILD_DIR $f; done
+
+---
+Checks:            '-*,readability-implicit-bool-conversion'
+WarningsAsErrors:  ''
+HeaderFilterRegex: ''
+FormatStyle:       none
+CheckOptions:
+  - key:           readability-implicit-bool-conversion.AllowIntegerConditions
+    value:         true
+  - key:           readability-implicit-bool-conversion.AllowPointerConditions
+    value:         true
+...

include/ff/egvop.h

@@ -21,7 +21,7 @@ void sumGradient(double scale, grad_prec* g0x, grad_prec* g0y, grad_prec* g0z, /
    const grad_prec* g1x, const grad_prec* g1y, const grad_prec* g1z);
 
 /// Copies the energy gradients from device to host.
-void copyGradient(int vers, double* grdx, double* grdy, double* grdz, //
+void copyGradientSync(int vers, double* grdx, double* grdy, double* grdz, //
    const grad_prec* gx_src, const grad_prec* gy_src, const grad_prec* gz_src, int queue);
 
 /// Copies the energy gradients from device to host.

src/egvop.cpp

@@ -57,7 +57,7 @@ void sumGradient(double s, grad_prec* g0x, grad_prec* g0y, grad_prec* g0z, const
 }
 
 namespace tinker {
-void copyGradient(int vers, double* grdx, double* grdy, double* grdz, //
+void copyGradientSync(int vers, double* grdx, double* grdy, double* grdz, //
    const grad_prec* gx_src, const grad_prec* gy_src, const grad_prec* gz_src, int queue)
 {
    if (vers & calc::grad) {
@@ -99,7 +99,7 @@ void copyGradient(int vers, double* grdx, double* grdy, double* grdz, //
 void copyGradient(int vers, double* grdx, double* grdy, double* grdz, //
    const grad_prec* gx_src, const grad_prec* gy_src, const grad_prec* gz_src)
 {
-   copyGradient(vers, grdx, grdy, grdz, gx_src, gy_src, gz_src, g::q0);
+   copyGradientSync(vers, grdx, grdy, grdz, gx_src, gy_src, gz_src, g::q0);
 }
 
 void copyGradient(int vers, double* grdx, double* grdy, double* grdz)

src/mdsave.cpp

@@ -119,8 +119,8 @@ static void mdsaveDupThenWrite(int istep, time_prec dt)
 
    {
       std::vector<double> arrx(n), arry(n), arrz(n);
-      copyGradient(calc::grad, arrx.data(), arry.data(), arrz.data(), dup_buf_gx, dup_buf_gy,
-         dup_buf_gz, false);
+      copyGradientSync(calc::grad, arrx.data(), arry.data(), arrz.data(), dup_buf_gx, dup_buf_gy,
+         dup_buf_gz, g::q1);
       // convert gradient to acceleration
       const double ekcal = units::ekcal;
       for (int i = 0; i < n; ++i) {