MTH$AINT        - FLOATING TRUNCATION                            21-AUG-1978 19:01:28   VAX-11 MACRO X0.3-11               Page   0

TABLE OF CONTENTS   



   (2)     100  HISTORY		; Detailed Current Edit History

   (3)     100  DECLARATIONS

   (4)     300  MTH$AINT	Real to Real truncation

MTH$AINT        - FLOATING TRUNCATION                            21-AUG-1978 19:01:28   VAX-11 MACRO X0.3-11               Page   1

0-3                                                                                                                              (1)



                                     0000   100 	.TITLE	MTH$AINT - FLOATING TRUNCATION

                                     0000   200 	.IDENT	/0-3/		; File: MTHAINT.MAR

                                     0000   300 

                                     0000   400 ;

                                     0000   500 ; Copyright (C) 1977

                                     0000   600 ; Digital Equipment Corporation, Maynard, Massachusetts 01754

                                     0000   700 ;

                                     0000   800 ; This software is furnished under a license for use only on a single

                                     0000   900 ; computer  system  and  may be copied only with the inclusion of the

                                     0000  1000 ; above copyright notice. This software, or any other copies thereof,

                                     0000  1100 ; may not be provided or otherwise made available to any other person

                                     0000  1200 ; except for use on such system and to one who agree to these license 

                                     0000  1300 ; terms.  Title to  and  ownership of the software shall at all times 

                                     0000  1400 ; remain in DEC.

                                     0000  1500 ;

                                     0000  1600 ; The information in the software is subject to change without notice

                                     0000  1700 ; and should  not  be construed  as a commitment by Digital Equipment 

                                     0000  1800 ; Corporation.

                                     0000  1900 ;

                                     0000  2000 ; DEC assumes  no  responsibility  for the use or  reliability of its

                                     0000  2100 ; software on equipment which is not supplied by DEC.

                                     0000  2200 ;

                                     0000  2300 ;

                                     0000  2400 ; FACILITY: MATH LIBRARY

                                     0000  2500 ;++

                                     0000  2600 ; ABSTRACT:

                                     0000  2700 ;	This module contains routine MTH$AINT:

                                     0000  2800 ;	truncate a floating-point number.

                                     0000  2900 ;

                                     0000  3000 ;

                                     0000  3100 ;--

                                     0000  3200 ;

                                     0000  3300 ; VERSION: 0

                                     0000  3400 ;

                                     0000  3500 ; HISTORY:

                                     0000  3600 ;

                                     0000  3700 ; AUTHOR:

                                     0000  3800 ;	Jonathan M. Taylor, 30-Jul-77: Version 0

                                     0000  3900 ;

                                     0000  4000 ; MODIFIED BY:

                                     0000  4100 ;

                                     0000  4200 ;

                                     0000  4300 ;

MTH$AINT        - FLOATING TRUNCATION                            21-AUG-1978 19:01:28   VAX-11 MACRO X0.3-11               Page   2

0-3             HISTORY  ; Detailed Current Edit History                                                                         (2)



                                     0000   100 	.SBTTL	HISTORY		; Detailed Current Edit History

                                     0000   200 

                                     0000   300 

                                     0000   400 ; Edit History for Version 0 of MTH$AINT

                                     0000   500 ;

                                     0000   600 ; 0-3	- Remove MTH$FLAG_JACKET.  TNH 5-July-78

MTH$AINT        - FLOATING TRUNCATION                            21-AUG-1978 19:01:28   VAX-11 MACRO X0.3-11               Page   3

0-3             DECLARATIONS                                                                                                     (3)



                                     0000   100 	.SBTTL	DECLARATIONS

                                     0000   200 

                                     0000   300 ;

                                     0000   400 ; INCLUDE FILES:

                                     0000   500 ;	oerr.mar

                                     0000   600 ;

                                     0000   700 

                                     0000   800 ;

                                     0000   900 ; EXTERNAL SYMBOLS:

                                     0000  1000 ;	NONE

                                     0000  1100 ;

                                     0000  1200 

                                     0000  1300 ;

                                     0000  1400 ; MACROS:

                                     0000  1500 ;	NONE

                                     0000  1600 ;

                                     0000  1700 

                                     0000  1800 ;

                                     0000  1900 ; PSECT DECLARATIONS:

                                 00000000  2000 	.PSECT	MTH$CODE	PIC, SHR, LONG, EXE, NOWRT

                                     0000  2100 

                                     0000  2200 ;

                                     0000  2300 ; EQUATED SYMBOLS:

                                     0000  2400 ;	NONE

                                     0000  2500 ;

                                     0000  2600 

                                     0000  2700 ;

                                     0000  2800 ; OWN STORAGE:

                                     0000  2900 	

MTH$AINT        - FLOATING TRUNCATION                            21-AUG-1978 19:01:28   VAX-11 MACRO X0.3-11               Page   4

0-3             DECLARATIONS                                                                                                     (4)



                                     0000   100 ;	NONE

                                     0000   200 ;

                                     0000   300 	.SBTTL	MTH$AINT	Real to Real truncation

                                     0000   400 

                                     0000   500 ;++

                                     0000   600 ; FUNCTIONAL DESCRIPTION:

                                     0000   700 ;	Return the arguments with zeroes to the right of the decimal

                                     0000   800 ;	point.

                                     0000   900 ;

                                     0000  1000 ;

                                     0000  1100 ; CALLING SEQUENCE:

                                     0000  1200 ;	Truncation.wf.v = MTH$AINT (arg.rf.r)

                                     0000  1300 ;	

                                     0000  1400 ;

                                     0000  1500 ;

                                     0000  1600 ; INPUT PARAMETERS:

                                     0000  1700 ;	The one argument is a single-precision floating-point value

                                     0000  1800 ;	and is call-by-reference.

                                     0000  1900 ;	

                                     0000  2000 ;

                                     0000  2100 ; IMPLICIT INPUTS:

                                     0000  2200 ;	NONE

                                     0000  2300 ;

                                     0000  2400 ; OUTPUT PARAMETERS:

                                     0000  2500 ;	NONE

                                     0000  2600 ;

                                     0000  2700 ; IMPLICIT OUTPUTS:

                                     0000  2800 ;	NONE

                                     0000  2900 ;

                                     0000  3000 ; COMPLETION CODES:

                                     0000  3100 ;	NONE

                                     0000  3200 ;

                                     0000  3300 ; SIDE EFFECTS:

                                     0000  3400 ;	Reserved Operand and Floating Underflow exceptions can occur.

                                     0000  3500 ;	

                                     0000  3600 ;

                                     0000  3700 ;--

                                     0000  3800 

                                     0000  3900 

                               0000' 0000  4000 	.ENTRY	MTH$AINT,	^M<>

            50         04 BC     50  0002  4200 	MOVF	@4(AP), R0		; R0 = arg

            00            50     54  0006  4300 	EMODF	R0, #0, #1, R1, R1	; R1 = fraction_part(R0)

            51            08         0009       

                          51         000B       

            50            51     42  000C  4400 	SUBF	R1, R0			; R0 = integer_part(R0)

                                 04  000F  4500 	RET

                                     0010  4600 

                                     0010  4700 

                                     0010  4800 	.END

MTH$AINT        - FLOATING TRUNCATION                            21-AUG-1978 19:01:28   VAX-11 MACRO X0.3-11               Page   5

SYMBOL TABLE                                                                                                                     (4)



FOR$K_ERR_PREFX= 00000018            

MTH$AINT         00000000 RG    02   

MTH$K_ERR_PREFX= 00000016            

MTH__FLOOVEMAT = 00000058            

MTH__FLOUNDMAT = 00000059            

MTH__INVARG    = 00000051            

MTH__LOGZERNEG = 00000053            

MTH__SINSIGLOS = 00000057            

MTH__SQUROONEG = 00000054            

MTH__UNDEXP    = 00000052            

MTH__WRONUMARG = 00000050            





PROGRAM SECTION SYNOPSIS



.  ABS  .        00000000      00     NOPIC   USR   CON   ABS   LCL NOSHR NOEXE NORD  NOWRT BYTE  

. BLANK .        00000000      01     NOPIC   USR   CON   REL   LCL NOSHR   EXE   RD    WRT BYTE  

MTH$CODE         00000010      02       PIC   USR   CON   REL   LCL   SHR   EXE   RD  NOWRT LONG  





THERE WERE NO ERRORS OR WARNINGS.

28066. BYTES LEFT IN FREE MEMORY POOL.

OBJ$:MTHAINT,LIS$:MTHAINT/-SP=LIB$:S/ML,SRC$:P,MTHAINT

0 MLB DIR RDS - 0 GETS TO DEFINE 0 MACROS. 2 INTER. FILE WRITES. 

