vector_subtract_scalar.cu File Reference

Implementation of the Vector::subtract_scalar method for GPU-accelerated subtraction of a scalar from a vector. More...

#include "vector.h"
#include <cuda_runtime.h>
#include <stdexcept>
#include <cfloat>
#include <cmath>

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Functions
__global__ void	vectorSubtractScalarKernel (double *data, double scalar, int size)
	CUDA kernel for subtracting a scalar from vector elements. More...

Detailed Description

Implementation of the Vector::subtract_scalar method for GPU-accelerated subtraction of a scalar from a vector.

Definition in file vector_subtract_scalar.cu.

Function Documentation

vectorSubtractScalarKernel()

__global__ void vectorSubtractScalarKernel	(	double *	data,
		double	scalar,
		int	size
	)

CUDA kernel for subtracting a scalar from vector elements.

Parameters

data	Pointer to the vector data.
scalar	The scalar to subtract.
size	Total number of elements in the vector.

Definition at line 18 of file vector_subtract_scalar.cu.

                                                                                  {
    // Calculate global thread index
    int idx = blockIdx.x * blockDim.x + threadIdx.x;
 
    // Check if thread is within vector bounds
    if (idx < size) {
        // Perform subtraction
        double result = data[idx] - scalar;
 
        // Handle underflow
        if (!isfinite(result)) {
            result = (result > 0.0) ? DBL_MAX : -DBL_MAX;
        }
 
        // Store the result
        data[idx] = result;
    }
}