vendor: OpenCV 5.0.0 snapshot at 40738fb16ceddb5fb3fea747585f7ce6abb0605b

cmake/checks/cpu_rvv_fp16.cpp

@@ -0,0 +1,25 @@
+#include <stdio.h>
+
+#if defined(__riscv) && __riscv && defined (__riscv_zvfh) && __riscv_zvfh
+#  include <riscv_vector.h>
+
+int test()
+{
+    const _Float16 input1[] = {0.5f, 1.5f, 2.5f, 3.5f};
+    const _Float16 input2[] = {-0.5f, -1.5f, -2.5f, -3.5f};
+
+    size_t vl =  __riscv_vsetvl_e16m1(4);
+    vfloat16m1_t vec1 = __riscv_vle16_v_f16m1(input1, vl);
+    vfloat16m1_t vec2 = __riscv_vle16_v_f16m1(input2, vl);
+    vfloat16m1_t result = __riscv_vfadd_vv_f16m1(vec1, vec2, vl);
+    return (int)__riscv_vfmv_f_s_f16m1_f16(result);
+}
+#else
+#error "RISC-V Vector Extension with Half-Precision Floating-Point (zvfh) is not supported"
+#endif
+
+int main()
+{
+  printf("%d\n", test());
+  return 0;
+}