dequantize_val Class — pytorch Architecture

Source Code

aten/src/ATen/test/vec_test_all_types.h lines 1530–1541

template <typename T>
float dequantize_val(float scale, int64_t zero_point, T value) {
    //when negated scale is used as addition
#if defined(CHECK_WITH_FMA)
    float neg_p = -(zero_point * scale);
    float v = static_cast<float>(value);
    float ret = fma(v, scale, neg_p);
#else
    float ret = (static_cast<float>(value) - zero_point) * scale;
#endif
    return ret;
}