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Where to find CUDA cutil_math.h?

The CUDA FAQ says:

CUDA defines vector types such as float4, but does not include any operators on them by default. However, you can define your own operators using standard C ++. The CUDA SDK includes the header "cutil_math.h" , which defines some common operations on vector types.

However, I cannot find this using the CUDA SDK 5.0. Deleted / renamed?

I found the header version here . How does this relate to what should be with the SDK?

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cutil CUDA 5.0 (.. "SDK" ). SDK CUDA 5, , SDK.

nvidia CUDA 5.0 (CUDA_Samples_Release_Notes.pdf, ). , , , nvidia cutil - " . ", . - , . .

, :

CUTIL CUDA CUDA 5.0 , NVIDIA_CUDA-5.0/common/inc: helper_cuda.h, helper_cuda_gl.h, helper_cuda_drvapi.h, helper_functions.h, helper_image.h, helper_math.h, helper_string.h, helper_timer.h

CUDA , CUDA, , , . CUDA Samples CUTIL, .

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