Return to frexp.s CVS log

Up to [CSRG BSD Unix] / 43BSDReno / lib / libc / vax / gen

Annotation of 43BSDReno/lib/libc/vax/gen/frexp.s, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1980 Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms are permitted
        !             6:  * provided that: (1) source distributions retain this entire copyright
        !             7:  * notice and comment, and (2) distributions including binaries display
        !             8:  * the following acknowledgement:  ``This product includes software
        !             9:  * developed by the University of California, Berkeley and its contributors''
        !            10:  * in the documentation or other materials provided with the distribution
        !            11:  * and in all advertising materials mentioning features or use of this
        !            12:  * software. Neither the name of the University nor the names of its
        !            13:  * contributors may be used to endorse or promote products derived
        !            14:  * from this software without specific prior written permission.
        !            15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            16:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            18:  */
        !            19: 
        !            20: #if defined(LIBC_SCCS) && !defined(lint)
        !            21:        .asciz "@(#)frexp.s     5.6 (Berkeley) 6/1/90"
        !            22: #endif /* LIBC_SCCS and not lint */
        !            23: 
        !            24: /* C library -- frexp(value, eptr) */
        !            25: 
        !            26: #include "DEFS.h"
        !            27: 
        !            28: ENTRY(frexp, 0)
        !            29:        movd    4(ap),r0                # (r0,r1) := value
        !            30:        extzv   $7,$8,r0,*12(ap)        # Fetch exponent
        !            31:        jeql    1f                      # If exponent zero, we're done
        !            32:        subl2   $128,*12(ap)            # Bias the exponent appropriately
        !            33:        insv    $128,$7,$8,r0           # Force result exponent to biased 0
        !            34: 1:
        !            35:        ret

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.