2.9BSD - /usr/include/sys/fperr.h

   1: /*
   2:  * Structure of the floating point error register save/return
   3:  */
   4: 
   5: struct fperr
   6: {
   7:     short   f_fec;
   8:     caddr_t f_fea;
   9: };
  10: 
  11: /*
  12:  * Bits in the floating point status register
  13:  */
  14: #define FPS_FER     0100000     /* floating error */
  15: #define FPS_FID     0040000     /* interrupt disable */
  16: /* bit 13-12 are unused */
  17: #define FPS_FIUV    0004000     /* interrupt on undefined variable */
  18: #define FPS_FIU     0002000     /* interrupt on underflow */
  19: #define FPS_FIV     0001000     /* interrupt on overflow */
  20: #define FPS_FIC     0000400     /* interrupt on integer conversion error */
  21: #define FPS_FD      0000200     /* floating double precision mode */
  22: #define FPS_FL      0000100     /* floating long integer mode */
  23: #define FPS_FT      0000040     /* floating truncate mode */
  24: #define FPS_FMM     0000020     /* floating maintenance mode */
  25: #define FPS_FN      0000010     /* floating negative */
  26: #define FPS_FZ      0000004     /* floating zero */
  27: #define FPS_FV      0000002     /* floating overflow */
  28: #define FPS_FC      0000001     /* floating carry */
  29: 
  30: #define FPS_BITS    \
  31: "\10\20FER\17FID\14FIUV\13FIU\12FIV\11FIC\10FD\7FL\6FT\5FMM\4FN\3FZ\2FV\1FC"
  32: 
  33: /*
  34:  * Floating point error register codes
  35:  */
  36: #define FEC_FMMT    0000016     /* maintenance mode trap */
  37: #define FEC_FUV     0000014     /* floating undefined variable */
  38: #define FEC_FU      0000012     /* floating underflow */
  39: #define FEC_FV      0000010     /* floating overflow */
  40: #define FEC_FC      0000006     /* floating integer conversion error */
  41: #define FEC_FDZ     0000004     /* floating divide by zero */
  42: #define FEC_FOPER   0000002     /* floating op code error */

Defined struct's

Defined macros

Usage of this include