FPERR(2) UNIX Programmer's Manual FPERR(2) NAME fperr - get floating-point error registers (2BSD) SYNOPSIS #include struct fperr { short f_fec; caddr_t f_fea; }; fperr(fpe) struct fperr *fpe; DESCRIPTION _F_p_e_r_r returns the contents of the floating-point processor's error registers as they were following the last floating exception generated by the calling process. The registers are stored in the structure pointed to by _f_p_e. This call is required because the error registers in the PDP-11 floating-point processor are read-only. Thus, they may be changed by some other process between the time that the current process generates an exception and the time that it reads the registers. Therefore, the system saves their state at the time of an exception. The values returned are valid only after a floating-point exception. ERRORS [EINVAL] The kernel has not been compiled for a pro- cessor with floating point. SEE ALSO Ed Gould, Jim Reeds, Vance Vaughan, _U_N_I_X _P_r_o_b_l_e_m_s _w_i_t_h _F_l_o_a_t_i_n_g _P_o_i_n_t _P_r_o_c_e_s_s_o_r_s BUGS _F_p_e_r_r is unique to the PDP-11 and 2BSD; its use is discouraged. Printed 11/26/99 January 22, 1987 1