Function encoding_c_mem::encoding_mem_convert_str_to_utf16

#[no_mangle]
pub unsafe extern "C" fn encoding_mem_convert_str_to_utf16(
    src: *const u8, 
    src_len: usize, 
    dst: *mut u16, 
    dst_len: usize
) -> usize

Converts valid UTF-8 to valid UTF-16.

The length of the destination buffer must be at least the length of the source buffer.

Returns the number of u16s written.

Panics

Panics if the destination buffer is shorter than stated above.

Undefined behavior

UB ensues if src and src_len don't designate a valid memory block, if src is NULL, if dst and dst_len don't designate a valid memory block, if dst is NULL, if the two memory blocks overlap, of if the buffer designated by src and src_len does not contain valid UTF-8. (If src_len is 0, src may be bogus but still has to be non-NULL and aligned. Likewise for dst and dst_len.)