зеркало из https://github.com/github/ruby.git
26 строки
430 B
C
26 строки
430 B
C
#include "prism/util/pm_state_stack.h"
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/**
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* Pushes a value onto the stack.
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*/
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void
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pm_state_stack_push(pm_state_stack_t *stack, bool value) {
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*stack = (*stack << 1) | (value & 1);
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}
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/**
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* Pops a value off the stack.
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*/
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void
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pm_state_stack_pop(pm_state_stack_t *stack) {
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*stack >>= 1;
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}
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/**
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* Returns the value at the top of the stack.
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*/
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bool
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pm_state_stack_p(pm_state_stack_t *stack) {
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return *stack & 1;
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}
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