Made separate version for half_t with division made on float

src/operator/mshadow_op.h

@@ -236,11 +236,10 @@ struct rtrue_divide : public mxnet_op::tunable {
 /***** floor_divide ******/
 
 struct floor_divide : public mxnet_op::tunable {
- template <typename DType,
- typename std::enable_if<!std::is_same<DType, bool>::value &&
- (std::is_integral<DType>::value ||
- std::is_same<DType, mshadow::half::half_t>::value),
- int>::type = 0>
+ template <
+ typename DType,
+ typename std::enable_if<!std::is_same<DType, bool>::value && std::is_integral<DType>::value,
+ int>::type = 0>
  MSHADOW_XINLINE static DType Map(DType a, DType b) {
  return static_cast<DType>(::floor(static_cast<double>(a) / static_cast<double>(b)));
  }
@@ -249,6 +248,12 @@ struct floor_divide : public mxnet_op::tunable {
  return static_cast<bool>(::floor(a / b));
  }
 
+ MSHADOW_XINLINE static mshadow::half::half_t Map(mshadow::half::half_t a,
+ mshadow::half::half_t b) {
+ return static_cast<mshadow::half::half_t>(
+ ::floor(static_cast<float>(a) / static_cast<float>(b)));
+ }
+
  template <typename DType,
  typename std::enable_if<!std::is_integral<DType>::value &&
  !std::is_same<DType, float>::value &&