# Standard library header <csetjmp>

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< cpp‎ | header

This header was originally in the C standard library as `<setjmp.h>`.

This header is part of the program support library.

### Types
jmp_buf | execution context type (typedef)
### Macros
setjmp | saves the context (function macro)
### Functions
longjmp | jumps to specified location (function)

### Synopsis

    namespace std {
      using jmp_buf = /* see description */ ;
      [[noreturn]] void longjmp(jmp_buf env, int val);
    }
    #define setjmp(env) /* see description */

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