Helper_math.h header file missing from cuda-samples about cuda-samples

[nathantsoi]

@mdoijade, just an FYI -- it would be useful to have all the headers here, as other packages depend on these files: e.g. OpenKinect/libfreenect2#777 (comment)

and installing from the runfile is inconvenient in a docker container, for example.

[mdoijade]

@nathantsoi @rickstaa helper_math.h is now added to the repo. https://github.com/NVIDIA/cuda-samples/tree/10.1.2

[rickstaa]

@mdoijade First of all, thanks a lot for including the helper_math.h. I however still had one problem when installing a package which has the headers as a dependency. This is caused by a difference in the folder structure of the NVIDIA_CUDA-10.0_Samples folder that is included with the drivers and the one present in this repository. Due to this difference, the packages using these headers still throw an exception. I now solve this by renaming the Common and Common/Common folders, but it might be helpful to change this to improve consistency.

Included NVIDIA_CUDA-10.0_Samples tree

NVIDIA_CUDA-10.0_Samples/
├── 0_Simple
├── 1_Utilities
├── 2_Graphics
├── 3_Imaging
├── 4_Finance
├── 5_Simulations
├── 6_Advanced
├── 7_CUDALibraries
├── common
│   ├── data
│   ├── findgllib.mk
│   ├── inc
│   ├── lib
│   └── src
├── EULA.txt
└── Makefile

This repository

NVIDIA_CUDA-10.0_Samples/
├── common
│   ├── drvapi_error_string.h
│   ├── exception.h
│   ├── helper_cuda.h
│   ├── helper_cuda_drvapi.h
│   ├── helper_functions.h
│   ├── helper_image.h
│   ├── helper_string.h
│   ├── helper_timer.h
│   └── nvrtc_helper.h
├── LICENSE
├── Makefile
├── README.md
└── Samples

[mdoijade]

@rickstaa helper_math.h is not been added to this repo because no existing samples in it currently needs it.
In future when such samples are added we would add it.