Return to infnan.s CVS log

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

Annotation of 43BSDReno/lib/libm/vax/infnan.s, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1985 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:  * All recipients should regard themselves as participants in an ongoing
                     20:  * research project and hence should feel obligated to report their
                     21:  * experiences (good or bad) with these elementary function codes, using
                     22:  * the sendbug(8) program, to the authors.
                     23:  *
                     24:  *     @(#)infnan.s    5.4 (Berkeley) 6/1/90
                     25:  */
                     26:        .data
                     27:        .align  2
                     28: _sccsid:
                     29: .asciz "@(#)infnan.s   1.1 (Berkeley) 8/21/85; 5.4 (ucb.elefunt) 6/1/90"
                     30: 
                     31: /*
                     32:  * infnan(arg) int arg;
                     33:  * where arg :=    EDOM        if result is  NaN
                     34:  *          :=  ERANGE if result is +INF
                     35:  *          := -ERANGE if result is -INF
                     36:  *
                     37:  * The Reserved Operand Fault is generated inside of this routine.
                     38:  */    
                     39:        .globl  _infnan
                     40:        .set    EDOM,33
                     41:        .set    ERANGE,34
                     42:        .text
                     43:        .align 1
                     44: _infnan:
                     45:        .word   0x0
                     46:        cmpl    4(ap),$ERANGE
                     47:        bneq    1f
                     48:        movl    $ERANGE,_errno
                     49:        brb     2f
                     50: 1:     movl    $EDOM,_errno
                     51: 2:     emodd   $0,$0,$0x8000,r0,r0     # generates the reserved operand fault
                     52:        ret

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