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Annotation of coherent/d/bin/cc/c/h/i8086/cc0mch.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * This header file contains definitions used by
                      3:  * the SMALL and LARGE model C compiler for the Intel iAPX-86.
                      4:  * mch.h has set either IEEE or DECVAX to 1.
                      5:  * Both formats use 8 byte double constants with the sign bit in the same place.
                      6:  *
                      7:  * Some definitions for the portable floating point input code.
                      8:  * Used by the multiprecision integer package.
                      9:  */
                     10: 
                     11: #define        NBIG    8                       /* Loop limit, etc */
                     12: typedef        unsigned char   BIG[NBIG];      /* Unsigned, holds 64 bits */
                     13: #define        t5ne(n) ((n[0]&0370)!=0)        /* Check if top 5 bits clear */
                     14: #define        cbit(n) (((n)>>8)&0377)         /* Get 'carry' for addition */
                     15: #define        MSBBIG  0200                    /* Top bit of each thing */
                     16: 
                     17: #if    IEEE
                     18: #define        IROUND  6                       /* IEEE format */
                     19: #define        BROUND  010                     /* 52 bits */
                     20: #define        EXPBIAS 1023                    /* binary exponent bias */
                     21: #define        EXPMAX  2046                    /* maximum biased binary exponent */
                     22: #else
                     23: #define        IROUND  6                       /* DEC VAX-11 format */
                     24: #define        BROUND  01                      /* 55 bits */
                     25: #define        EXPBIAS 129                     /* binary exponent bias */
                     26: #define        EXPMAX  255                     /* maximum biased binary exponent */
                     27: #endif
                     28: 
                     29: /* This macro determines which bit field base types are promoted */
                     30: #define doalign(t)     0

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