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#include "tests.h"
static const double R2 = 0.7071067811865476;
static void build_fusion(struct PsiQuantumCircuit* c)
{
psi_apply_h(c, 0);
psi_apply_z(c, 0);
psi_apply_h(c, 0);
psi_apply_x(c, 1);
psi_apply_x(c, 1);
}
void run_kernel_tests(void)
{
psi_test_section("Kernel batching and fusion");
struct PsiQuantumCircuit hh = psi_new_quantum_circuit(1);
psi_apply_h(&hh, 0);
psi_apply_h(&hh, 0);
struct PsiComplex hh_exp[] = { psi_new_complex(1.0, 0.0), psi_new_complex(0.0, 0.0) };
psi_check_circuit("H then H = identity", &hh, hh_exp, 2);
psi_free_quantum_circuit(&hh);
struct PsiKernel a =
psi_new_kernel("H",
psi_matrix(2, 2, psi_new_complex(R2, 0.0), psi_new_complex(R2, 0.0),
psi_new_complex(R2, 0.0), psi_new_complex(-R2, 0.0)),
(size_t[]){ 0 }, 1);
struct PsiKernel b = psi_clone_kernel(a);
psi_test_check(psi_kernels_can_fuse(a, b), "adjacent single-qubit kernels fuse");
psi_free_kernel(&a);
psi_free_kernel(&b);
struct PsiKernelBatch batch = psi_new_kernel_batch(1);
psi_add_kernel(
&batch,
psi_new_kernel("H",
psi_matrix(2, 2, psi_new_complex(R2, 0.0), psi_new_complex(R2, 0.0),
psi_new_complex(R2, 0.0), psi_new_complex(-R2, 0.0)),
(size_t[]){ 0 }, 1));
psi_add_kernel(
&batch,
psi_new_kernel("H",
psi_matrix(2, 2, psi_new_complex(R2, 0.0), psi_new_complex(R2, 0.0),
psi_new_complex(R2, 0.0), psi_new_complex(-R2, 0.0)),
(size_t[]){ 0 }, 1));
psi_optimize_kernel_batch(&batch);
psi_test_check(batch.count == 1, "batch fuses two H kernels into one");
psi_free_kernel_batch(&batch);
psi_check_runtimes_agree("Runtimes agree on fusion circuit", 2, build_fusion);
}
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