patch_seq_peek_is_quotation

seq_runtime::quotations

Function patch_seq_peek_is_quotation 

Source 
#[unsafe(no_mangle)]
pub unsafe extern "C" fn patch_seq_peek_is_quotation(
    stack: Stack,
) -> i64
Expand description

Check if the top of stack is a quotation (not a closure)

Used by the compiler for tail call optimization of call. Returns 1 if the top value is a Quotation, 0 otherwise.

Stack effect: ( quot – quot ) [non-consuming peek]

§Safety

  • Stack must not be null