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Annotation of 43BSDReno/lib/libc/tahoe/fpe/fp_exp.s, revision 1.1.1.1

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 "@(#)fp_exp.s    1.3 (Berkeley) 6/1/90"
                     25: #endif /* SYSLIBC_SCCS and not lint */
                     26: 
                     27: #include <tahoemath/fp.h>
                     28: #include "DEFS.h"
                     29: 
                     30: /*
                     31:  * Reserved floating point operand.
                     32:  */
                     33: ASENTRY(fpresop, 0)
                     34:        movl    $0xaaaaaaaa,r0
                     35:        movl    $0xaaaaaaaa,r1
                     36:        ret
                     37: 
                     38: /*
                     39:  * Floating point overflow.
                     40:  */
                     41: ASENTRY(fpover, 0)
                     42:        movl    $HUGE0,r0
                     43:        movl    $HUGE1,r1
                     44:        ret
                     45: 
                     46: /*
                     47:  * Floating point underflow.
                     48:  */
                     49: ASENTRY(fpunder, 0)
                     50:        clrl    r0
                     51:        clrl    r1
                     52:        ret
                     53: 
                     54: /*
                     55:  * Floating point division by zero.
                     56:  */
                     57: ASENTRY(fpzdiv, 0)
                     58:        divl2   $0,r1           # force division by zero.
                     59:        ret

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