Function rb_check_to_integer 

pub unsafe extern "C" fn rb_check_to_integer(
    val: VALUE,
    mid: *const c_char,
) -> VALUE

Identical to rb_check_convert_type, except the return value type is fixed to ::rb_cInteger.

@param[in] val An object to convert. @param[in] mid Conversion method (e.g. “to_ary”). @exception rb_eTypeError The mid does not generate an integer. @retval RUBY_Qnil No conversion defined. @retval otherwise An instance of ::rb_cInteger.

Generated by rb-sys for Ruby mri-x86_64-linux-gnu-3.2.3