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Annotation of 43BSDReno/lib/libc/tahoe/fpe/cmpf.s, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1986 Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * This code is derived from software contributed to Berkeley by
        !             6:  * Computer Consoles Inc.
        !             7:  *
        !             8:  * Redistribution and use in source and binary forms are permitted
        !             9:  * provided that: (1) source distributions retain this entire copyright
        !            10:  * notice and comment, and (2) distributions including binaries display
        !            11:  * the following acknowledgement:  ``This product includes software
        !            12:  * developed by the University of California, Berkeley and its contributors''
        !            13:  * in the documentation or other materials provided with the distribution
        !            14:  * and in all advertising materials mentioning features or use of this
        !            15:  * software. Neither the name of the University nor the names of its
        !            16:  * contributors may be used to endorse or promote products derived
        !            17:  * from this software without specific prior written permission.
        !            18:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            19:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            20:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            21:  */
        !            22: 
        !            23: #if defined(SYSLIBC_SCCS) && !defined(lint)
        !            24:        .asciz "@(#)cmpf.s      1.3 (Berkeley) 6/1/90"
        !            25: #endif /* SYSLIBC_SCCS and not lint */
        !            26: 
        !            27: /*
        !            28:  * cmpf(f1, f2)
        !            29:  *     float f1, f2;
        !            30:  * return -1, 0, 1 as f1 <, ==, > f2
        !            31:  */
        !            32: #include "DEFS.h"
        !            33: 
        !            34: XENTRY(cmpf, 0)
        !            35:        cmpl    4(fp),12(fp)
        !            36:        jneq    1f
        !            37:        clrl    r0
        !            38:        ret
        !            39: 1:
        !            40:        movl    4(fp),r0
        !            41:        jgeq    1f
        !            42:        xorl2   $0x80000000,r0
        !            43:        mnegl   r0,r0
        !            44: 1:
        !            45:        movl    12(fp),r1
        !            46:        jgeq    1f
        !            47:        xorl2   $0x80000000,r1
        !            48:        mnegl   r1,r1
        !            49: 1:
        !            50:        cmpl    r0,r1
        !            51:        jleq    1f
        !            52:        movl    $1,r0
        !            53:        ret
        !            54: 1:
        !            55:        mnegl   $1,r0
        !            56:        ret

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