more fixes

Author: dmah42

src/benchmark_register.h

@@ -24,7 +24,7 @@ typename std::vector<T>::iterator AddPowers(std::vector<T>* dst, T lo, T hi,
   static const T kmax = std::numeric_limits<T>::max();
 
   // Space out the values in multiples of "mult"
-  for (T i = static_cast<T>(1); i <= hi; i *= static_cast<T>(mult)) {
+  for (T i = static_cast<T>(1); i <= hi; i = static_cast<T>(i * mult)) {
     if (i >= lo) {
       dst->push_back(i);
     }
@@ -52,7 +52,7 @@ void AddNegatedPowers(std::vector<T>* dst, T lo, T hi, int mult) {
 
   const auto it = AddPowers(dst, hi_complement, lo_complement, mult);
 
-  std::for_each(it, dst->end(), [](T& t) { t *= -1; });
+  std::for_each(it, dst->end(), [](T& t) { t = static_cast<T>(t * -1); });
   std::reverse(it, dst->end());
 }
 

src/cycleclock.h

@@ -70,7 +70,7 @@ inline BENCHMARK_ALWAYS_INLINE int64_t Now() {
   // frequency scaling).  Also note that when the Mac sleeps, this
   // counter pauses; it does not continue counting, nor does it
   // reset to zero.
-  return mach_absolute_time();
+  return static_cast<int64_t>(mach_absolute_time());
 #elif defined(BENCHMARK_OS_EMSCRIPTEN)
   // this goes above x86-specific code because old versions of Emscripten
   // define __x86_64__, although they have nothing to do with it.