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#ifndef CAFFE2_UTILS_MATH_DETAIL_H_
#define CAFFE2_UTILS_MATH_DETAIL_H_
namespace caffe2 {
class CPUContext;
namespace math {
namespace detail {
// proxy to a class because of partial specialization limitations for functions
template<typename T, class Context, int FixedSize>
struct ScaleImpl {
inline void operator()(
const int N,
const float alpha,
const T* x,
T* y,
Context* context) {
Scale(N, alpha, x, y, context);
}
};
// Put light-weight implementations in .h file to enable inlining
template<typename T>
struct ScaleImpl<T, CPUContext, 1> {
inline void operator()(
const int N,
const float alpha,
const T* x,
T* y,
CPUContext* /*context*/) {
DCHECK_EQ(N, 1);
*y = *x * alpha;
}
};
template<typename T, class Context, int FixedSize>
struct AxpyImpl {
inline void operator()(
const int N,
const float alpha,
const T* x,
T* y,
Context* context) {
Axpy(N, alpha, x, y, context);
}
};
// Put light-weight implementations in .h file to enable inlining
template<typename T>
struct AxpyImpl<T, CPUContext, 1> {
inline void operator()(
const int N,
const float alpha,
const T* x,
T* y,
CPUContext* /*context*/) {
DCHECK_EQ(N, 1);
*y += *x * alpha;
}
};
} // namespace detail
template <typename T, class Context, int FixedSize>
inline void ScaleFixedSize(
const int N,
const float alpha,
const T* x,
T* y,
Context* context) {
detail::ScaleImpl<T, Context, FixedSize>()(N, alpha, x, y, context);
}
template <typename T, class Context, int FixedSize>
inline void AxpyFixedSize(
const int N,
const float alpha,
const T* x,
T* y,
Context* context) {
detail::AxpyImpl<T, Context, FixedSize>()(N, alpha, x, y, context);
}
} // namespace math
} // namespace caffe2
#endif // CAFFE2_UTILS_MATH_DETAIL_H_
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