Initial LsPower implementation

.venv/Lib/site-packages/numpy/distutils/checks/cpu_rvv.c

@@ -0,0 +1,13 @@
+#ifndef __riscv_vector
+  #error RVV not supported
+#endif
+
+#include <riscv_vector.h>
+
+int main(void)
+{
+    size_t vlmax = __riscv_vsetvlmax_e32m1();
+    vuint32m1_t a = __riscv_vmv_v_x_u32m1(0, vlmax);
+    vuint32m1_t b = __riscv_vadd_vv_u32m1(a, a, vlmax);
+    return __riscv_vmv_x_s_u32m1_u32(b);
+}