Apply consistent code formatting across the repo. Add clang-format and pre-commit hooks.

Samples/4_CUDA_Libraries/oceanFFT/README.md

@@ -34,4 +34,3 @@ Download and install the [CUDA Toolkit 12.5](https://developer.nvidia.com/cuda-d
 Make sure the dependencies mentioned in [Dependencies]() section above are installed.
 
 ## References (for more details)
-

Samples/4_CUDA_Libraries/oceanFFT/oceanFFT_kernel.cu

@@ -35,125 +35,124 @@ int cuda_iDivUp(int a, int b) { return (a + (b - 1)) / b; }
 // complex math functions
 __device__ float2 conjugate(float2 arg) { return make_float2(arg.x, -arg.y); }
 
-__device__ float2 complex_exp(float arg) {
-  return make_float2(cosf(arg), sinf(arg));
-}
+__device__ float2 complex_exp(float arg) { return make_float2(cosf(arg), sinf(arg)); }
 
-__device__ float2 complex_add(float2 a, float2 b) {
-  return make_float2(a.x + b.x, a.y + b.y);
-}
+__device__ float2 complex_add(float2 a, float2 b) { return make_float2(a.x + b.x, a.y + b.y); }
 
-__device__ float2 complex_mult(float2 ab, float2 cd) {
-  return make_float2(ab.x * cd.x - ab.y * cd.y, ab.x * cd.y + ab.y * cd.x);
+__device__ float2 complex_mult(float2 ab, float2 cd)
+{
+    return make_float2(ab.x * cd.x - ab.y * cd.y, ab.x * cd.y + ab.y * cd.x);
 }
 
 // generate wave heightfield at time t based on initial heightfield and
 // dispersion relationship
-__global__ void generateSpectrumKernel(float2 *h0, float2 *ht,
+__global__ void generateSpectrumKernel(float2      *h0,
+                                       float2      *ht,
                                        unsigned int in_width,
                                        unsigned int out_width,
-                                       unsigned int out_height, float t,
-                                       float patchSize) {
-  unsigned int x = blockIdx.x * blockDim.x + threadIdx.x;
-  unsigned int y = blockIdx.y * blockDim.y + threadIdx.y;
-  unsigned int in_index = y * in_width + x;
-  unsigned int in_mindex =
-      (out_height - y) * in_width + (out_width - x);  // mirrored
-  unsigned int out_index = y * out_width + x;
+                                       unsigned int out_height,
+                                       float        t,
+                                       float        patchSize)
+{
+    unsigned int x         = blockIdx.x * blockDim.x + threadIdx.x;
+    unsigned int y         = blockIdx.y * blockDim.y + threadIdx.y;
+    unsigned int in_index  = y * in_width + x;
+    unsigned int in_mindex = (out_height - y) * in_width + (out_width - x); // mirrored
+    unsigned int out_index = y * out_width + x;
 
-  // calculate wave vector
-  float2 k;
-  k.x = (-(int)out_width / 2.0f + x) * (2.0f * CUDART_PI_F / patchSize);
-  k.y = (-(int)out_width / 2.0f + y) * (2.0f * CUDART_PI_F / patchSize);
+    // calculate wave vector
+    float2 k;
+    k.x = (-(int)out_width / 2.0f + x) * (2.0f * CUDART_PI_F / patchSize);
+    k.y = (-(int)out_width / 2.0f + y) * (2.0f * CUDART_PI_F / patchSize);
 
-  // calculate dispersion w(k)
-  float k_len = sqrtf(k.x * k.x + k.y * k.y);
-  float w = sqrtf(9.81f * k_len);
+    // calculate dispersion w(k)
+    float k_len = sqrtf(k.x * k.x + k.y * k.y);
+    float w     = sqrtf(9.81f * k_len);
 
-  if ((x < out_width) && (y < out_height)) {
-    float2 h0_k = h0[in_index];
-    float2 h0_mk = h0[in_mindex];
+    if ((x < out_width) && (y < out_height)) {
+        float2 h0_k  = h0[in_index];
+        float2 h0_mk = h0[in_mindex];
 
-    // output frequency-space complex values
-    ht[out_index] =
-        complex_add(complex_mult(h0_k, complex_exp(w * t)),
-                    complex_mult(conjugate(h0_mk), complex_exp(-w * t)));
-    // ht[out_index] = h0_k;
-  }
+        // output frequency-space complex values
+        ht[out_index] =
+            complex_add(complex_mult(h0_k, complex_exp(w * t)), complex_mult(conjugate(h0_mk), complex_exp(-w * t)));
+        // ht[out_index] = h0_k;
+    }
 }
 
 // update height map values based on output of FFT
-__global__ void updateHeightmapKernel(float *heightMap, float2 *ht,
-                                      unsigned int width) {
-  unsigned int x = blockIdx.x * blockDim.x + threadIdx.x;
-  unsigned int y = blockIdx.y * blockDim.y + threadIdx.y;
-  unsigned int i = y * width + x;
+__global__ void updateHeightmapKernel(float *heightMap, float2 *ht, unsigned int width)
+{
+    unsigned int x = blockIdx.x * blockDim.x + threadIdx.x;
+    unsigned int y = blockIdx.y * blockDim.y + threadIdx.y;
+    unsigned int i = y * width + x;
 
-  // cos(pi * (m1 + m2))
-  float sign_correction = ((x + y) & 0x01) ? -1.0f : 1.0f;
+    // cos(pi * (m1 + m2))
+    float sign_correction = ((x + y) & 0x01) ? -1.0f : 1.0f;
 
-  heightMap[i] = ht[i].x * sign_correction;
+    heightMap[i] = ht[i].x * sign_correction;
 }
 
 // update height map values based on output of FFT
-__global__ void updateHeightmapKernel_y(float *heightMap, float2 *ht,
-                                        unsigned int width) {
-  unsigned int x = blockIdx.x * blockDim.x + threadIdx.x;
-  unsigned int y = blockIdx.y * blockDim.y + threadIdx.y;
-  unsigned int i = y * width + x;
+__global__ void updateHeightmapKernel_y(float *heightMap, float2 *ht, unsigned int width)
+{
+    unsigned int x = blockIdx.x * blockDim.x + threadIdx.x;
+    unsigned int y = blockIdx.y * blockDim.y + threadIdx.y;
+    unsigned int i = y * width + x;
 
-  // cos(pi * (m1 + m2))
-  float sign_correction = ((x + y) & 0x01) ? -1.0f : 1.0f;
+    // cos(pi * (m1 + m2))
+    float sign_correction = ((x + y) & 0x01) ? -1.0f : 1.0f;
 
-  heightMap[i] = ht[i].y * sign_correction;
+    heightMap[i] = ht[i].y * sign_correction;
 }
 
 // generate slope by partial differences in spatial domain
-__global__ void calculateSlopeKernel(float *h, float2 *slopeOut,
-                                     unsigned int width, unsigned int height) {
-  unsigned int x = blockIdx.x * blockDim.x + threadIdx.x;
-  unsigned int y = blockIdx.y * blockDim.y + threadIdx.y;
-  unsigned int i = y * width + x;
+__global__ void calculateSlopeKernel(float *h, float2 *slopeOut, unsigned int width, unsigned int height)
+{
+    unsigned int x = blockIdx.x * blockDim.x + threadIdx.x;
+    unsigned int y = blockIdx.y * blockDim.y + threadIdx.y;
+    unsigned int i = y * width + x;
 
-  float2 slope = make_float2(0.0f, 0.0f);
+    float2 slope = make_float2(0.0f, 0.0f);
 
-  if ((x > 0) && (y > 0) && (x < width - 1) && (y < height - 1)) {
-    slope.x = h[i + 1] - h[i - 1];
-    slope.y = h[i + width] - h[i - width];
-  }
+    if ((x > 0) && (y > 0) && (x < width - 1) && (y < height - 1)) {
+        slope.x = h[i + 1] - h[i - 1];
+        slope.y = h[i + width] - h[i - width];
+    }
 
-  slopeOut[i] = slope;
+    slopeOut[i] = slope;
 }
 
 // wrapper functions
-extern "C" void cudaGenerateSpectrumKernel(float2 *d_h0, float2 *d_ht,
+extern "C" void cudaGenerateSpectrumKernel(float2      *d_h0,
+                                           float2      *d_ht,
                                            unsigned int in_width,
                                            unsigned int out_width,
                                            unsigned int out_height,
-                                           float animTime, float patchSize) {
-  dim3 block(8, 8, 1);
-  dim3 grid(cuda_iDivUp(out_width, block.x), cuda_iDivUp(out_height, block.y),
-            1);
-  generateSpectrumKernel<<<grid, block>>>(d_h0, d_ht, in_width, out_width,
-                                          out_height, animTime, patchSize);
+                                           float        animTime,
+                                           float        patchSize)
+{
+    dim3 block(8, 8, 1);
+    dim3 grid(cuda_iDivUp(out_width, block.x), cuda_iDivUp(out_height, block.y), 1);
+    generateSpectrumKernel<<<grid, block>>>(d_h0, d_ht, in_width, out_width, out_height, animTime, patchSize);
 }
 
-extern "C" void cudaUpdateHeightmapKernel(float *d_heightMap, float2 *d_ht,
-                                          unsigned int width,
-                                          unsigned int height, bool autoTest) {
-  dim3 block(8, 8, 1);
-  dim3 grid(cuda_iDivUp(width, block.x), cuda_iDivUp(height, block.y), 1);
-  if (autoTest) {
-    updateHeightmapKernel_y<<<grid, block>>>(d_heightMap, d_ht, width);
-  } else {
-    updateHeightmapKernel<<<grid, block>>>(d_heightMap, d_ht, width);
-  }
+extern "C" void
+cudaUpdateHeightmapKernel(float *d_heightMap, float2 *d_ht, unsigned int width, unsigned int height, bool autoTest)
+{
+    dim3 block(8, 8, 1);
+    dim3 grid(cuda_iDivUp(width, block.x), cuda_iDivUp(height, block.y), 1);
+    if (autoTest) {
+        updateHeightmapKernel_y<<<grid, block>>>(d_heightMap, d_ht, width);
+    }
+    else {
+        updateHeightmapKernel<<<grid, block>>>(d_heightMap, d_ht, width);
+    }
 }
 
-extern "C" void cudaCalculateSlopeKernel(float *hptr, float2 *slopeOut,
-                                         unsigned int width,
-                                         unsigned int height) {
-  dim3 block(8, 8, 1);
-  dim3 grid2(cuda_iDivUp(width, block.x), cuda_iDivUp(height, block.y), 1);
-  calculateSlopeKernel<<<grid2, block>>>(hptr, slopeOut, width, height);
+extern "C" void cudaCalculateSlopeKernel(float *hptr, float2 *slopeOut, unsigned int width, unsigned int height)
+{
+    dim3 block(8, 8, 1);
+    dim3 grid2(cuda_iDivUp(width, block.x), cuda_iDivUp(height, block.y), 1);
+    calculateSlopeKernel<<<grid2, block>>>(hptr, slopeOut, width, height);
 }