pub unsafe extern "C" fn GrB_Matrix_apply_IndexOp_FP32(
C: *mut GB_Matrix_opaque,
Mask: *mut GB_Matrix_opaque,
accum: *mut GB_BinaryOp_opaque,
op: *mut GB_IndexUnaryOp_opaque,
A: *mut GB_Matrix_opaque,
y: f32,
desc: *mut GB_Descriptor_opaque
) -> i32