adds data validator cuda kernel

Author: dkazanc

httomolibgpu/cuda_kernels/remove_nan_inf.cu

@@ -0,0 +1,19 @@
+template <typename Type>
+__global__ void remove_nan_inf(Type *data, int Z, int M, int N, int *result) {
+  const long i = blockDim.x * blockIdx.x + threadIdx.x;
+  const long j = blockDim.y * blockIdx.y + threadIdx.y;
+  const long k = blockDim.z * blockIdx.z + threadIdx.z;
+
+  if (i >= N || j >= M || k >= Z)
+    return;
+
+  long long index = static_cast<long long>(i) + N * static_cast<long long>(j) + N * M * static_cast<long long>(k);
+
+  float val = float(data[index]); /*needs a cast to float for isnan isinf functions to work*/
+  Type zero = 0;
+  if (isnan(val) || isinf(val)) {
+    result[0] = 1;
+    data[index] = zero;
+  }
+
+}