# SIG_DFL, SIG_IGN

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< cpp‎ | utility‎ | program

Defined in header `<csignal>` |  |
#define SIG_DFL /*implementation defined*/ |  |
#define SIG_IGN /*implementation defined*/ |  |

The SIG_DFL and SIG_IGN macros expand into integral expressions that are not equal to an address of any function. The macros define signal handling strategies for std::signal() function.

Constant | Explanation
`SIG_DFL` | default signal handling
`SIG_IGN` | signal is ignored

### See also

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