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Annotation of 43BSDTahoe/sys/tahoemath/Knegf.s, revision 1.1

1.1     ! root        1: /*     Knegf.s 1.3     86/01/05        */
        !             2: 
        !             3: #include "../tahoemath/fp.h"
        !             4: #include "../tahoemath/Kfp.h"
        !             5: #include "../tahoe/SYS.h"
        !             6: 
        !             7:        .text
        !             8: ENTRY(Knegf, 0)
        !             9:        clrl    r1
        !            10:        andl3   $EXPMASK,4(fp),r0       /* check for reserved operand,zero. */
        !            11:        beql    retzero
        !            12:        movl    4(fp),r0                /* fetch operand. */
        !            13:        bbc     $31,r0,seton
        !            14:        andl2   $(0!SIGNBIT),r0         /* turn it off. */
        !            15:        ret
        !            16: seton: orl2    $SIGNBIT,r0             /* turn it on. */
        !            17:        ret
        !            18: retzero:
        !            19:        clrl    r0
        !            20:        ret

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