...gnum is raised using the function gsignal (), and returns the previous such action or SIG_DFL . The function gsignal () does the following: if no action (or the action SIG_DFL )…...gnum is raised using the function gsignal (), and returns the previous such action or SIG_DFL . The function gsignal () does the following: if no action (or the action SIG_DFL )…...e handled as one opaque object, of type fenv_t . The default environment is denoted by FE_DFL_ENV (of type const fenv_t * ). This is the environment setup at program start and i…...e handled as one opaque object, of type fenv_t . The default environment is denoted by FE_DFL_ENV (of type const fenv_t * ). This is the environment setup at program start and i…...e handled as one opaque object, of type fenv_t . The default environment is denoted by FE_DFL_ENV (of type const fenv_t * ). This is the environment setup at program start and i…...e handled as one opaque object, of type fenv_t . The default environment is denoted by FE_DFL_ENV (of type const fenv_t * ). This is the environment setup at program start and i…...e handled as one opaque object, of type fenv_t . The default environment is denoted by FE_DFL_ENV (of type const fenv_t * ). This is the environment setup at program start and i…...e handled as one opaque object, of type fenv_t . The default environment is denoted by FE_DFL_ENV (of type const fenv_t * ). This is the environment setup at program start and i…...e handled as one opaque object, of type fenv_t . The default environment is denoted by FE_DFL_ENV (of type const fenv_t * ). This is the environment setup at program start and i…...e handled as one opaque object, of type fenv_t . The default environment is denoted by FE_DFL_ENV (of type const fenv_t * ). This is the environment setup at program start and i…...e handled as one opaque object, of type fenv_t . The default environment is denoted by FE_DFL_ENV (of type const fenv_t * ). This is the environment setup at program start and i…...e handled as one opaque object, of type fenv_t . The default environment is denoted by FE_DFL_ENV (of type const fenv_t * ). This is the environment setup at program start and i…...e handled as one opaque object, of type fenv_t . The default environment is denoted by FE_DFL_ENV (of type const fenv_t * ). This is the environment setup at program start and i…...e handled as one opaque object, of type fenv_t . The default environment is denoted by FE_DFL_ENV (of type const fenv_t * ). This is the environment setup at program start and i…...e handled as one opaque object, of type fenv_t . The default environment is denoted by FE_DFL_ENV (of type const fenv_t * ). This is the environment setup at program start and i…...e handled as one opaque object, of type fenv_t . The default environment is denoted by FE_DFL_ENV (of type const fenv_t * ). This is the environment setup at program start and i…...e handled as one opaque object, of type fenv_t . The default environment is denoted by FE_DFL_ENV (of type const fenv_t * ). This is the environment setup at program start and i…...t can be the address of a signal handler function, or one of the following constants: SIG_DFL Reset the disposition of sig to the default. SIG_IGN Ignore sig . SIG_HOLD Add sig …...t can be the address of a signal handler function, or one of the following constants: SIG_DFL Reset the disposition of sig to the default. SIG_IGN Ignore sig . SIG_HOLD Add sig …...t can be the address of a signal handler function, or one of the following constants: SIG_DFL Reset the disposition of sig to the default. SIG_IGN Ignore sig . SIG_HOLD Add sig …