single_precision.hpp

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#pragma once
 
/**
 * Single-precision (FP32) scalar type aliases for mixed-precision GPU computation.
 *
 * Complements the existing FP64 types in type_aliases.hpp:
 *   Real    = double             →  RealSingle    = float
 *   Complex = std::complex<double>  →  ComplexSingle = std::complex<float>
 *
 * These types are used by GPU BLAS wrappers and mixed-precision Davidson
 * iterations where bulk H|ψ⟩ computation runs in FP32 for performance.
 */
 
#include <complex>
 
namespace q3 {
 
// Single-precision scalar types for GPU mixed-precision computation
using RealSingle = float;
using ComplexSingle = std::complex<float>;
 
} // namespace q3