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Length: 1252 (0x4e4)
Types: TextFile
Notes: UNIX file
Names: »fsr.h«
└─⟦26887b7e0⟧ Bits:30009717 Comet 32 harddisk image
└─⟦28c352965⟧ »/a« UNIX Filesystem
└─⟦this⟧ »usr/include/fsr.h«
/*
* @(#)fsr.h 1.2 7/13/83
* @(#)Copyright (C) 1983 by National Semiconductor Corp.
*/
/* Definitions for the floating point status register */
struct fsr {
unsigned int fsr_trap:3, /* trap which occurred (see below) */
fsr_ufenb:1, /* underflow trap enabled */
fsr_underflow:1, /* underflow occurred */
fsr_ienb:1, /* inexact result trap enabled */
fsr_inexact:1, /* inexact result occurred */
fsr_round:2, /* rounding mode (see below) */
fsr_software:7, /* reserved for software */
fsr_reserved:16; /* reserved for hardware */
};
/* Floating point trap types */
#define FTT_NONE 0 /* no trap occurred */
#define FTT_UNDERFLOW 1 /* underflow */
#define FTT_OVERFLOW 2 /* overflow */
#define FTT_DIVZERO 3 /* divide by zero */
#define FTT_ILLINSTR 4 /* illegal instruction */
#define FTT_ILLOPER 5 /* illegal operands */
#define FTT_INEXACT 6 /* inexact result */
#define FTT_UNUSED 7 /* unused */
/* Floating point rounding modes */
#define FRM_NEAREST 0 /* round to nearest value */
#define FRM_ZERO 1 /* round towards zero */
#define FRM_POSITIVE 2 /* round towards positive infinity */
#define FRM_NEGATIVE 3 /* round towards negative infinity */
#define FRM_DEFAULT FRM_NEAREST /* default type of rounding */