C This testcase was miscompiled on i?86/x86_64, the scheduler
|
C This testcase was miscompiled on i?86/x86_64, the scheduler
|
C swapped write to DMACH(1) with following read from SMALL(1),
|
C swapped write to DMACH(1) with following read from SMALL(1),
|
C at -O2+, as the front-end didn't signal in any way this kind
|
C at -O2+, as the front-end didn't signal in any way this kind
|
C of type punning is ok.
|
C of type punning is ok.
|
C The testcase is from blas, http://www.netlib.org/blas/d1mach.f
|
C The testcase is from blas, http://www.netlib.org/blas/d1mach.f
|
|
|
DOUBLE PRECISION FUNCTION D1MACH(I)
|
DOUBLE PRECISION FUNCTION D1MACH(I)
|
INTEGER*4 I
|
INTEGER*4 I
|
C
|
C
|
C DOUBLE-PRECISION MACHINE CONSTANTS
|
C DOUBLE-PRECISION MACHINE CONSTANTS
|
C D1MACH( 1) = B**(EMIN-1), THE SMALLEST POSITIVE MAGNITUDE.
|
C D1MACH( 1) = B**(EMIN-1), THE SMALLEST POSITIVE MAGNITUDE.
|
C D1MACH( 2) = B**EMAX*(1 - B**(-T)), THE LARGEST MAGNITUDE.
|
C D1MACH( 2) = B**EMAX*(1 - B**(-T)), THE LARGEST MAGNITUDE.
|
C D1MACH( 3) = B**(-T), THE SMALLEST RELATIVE SPACING.
|
C D1MACH( 3) = B**(-T), THE SMALLEST RELATIVE SPACING.
|
C D1MACH( 4) = B**(1-T), THE LARGEST RELATIVE SPACING.
|
C D1MACH( 4) = B**(1-T), THE LARGEST RELATIVE SPACING.
|
C D1MACH( 5) = LOG10(B)
|
C D1MACH( 5) = LOG10(B)
|
C
|
C
|
INTEGER*4 SMALL(2)
|
INTEGER*4 SMALL(2)
|
INTEGER*4 LARGE(2)
|
INTEGER*4 LARGE(2)
|
INTEGER*4 RIGHT(2)
|
INTEGER*4 RIGHT(2)
|
INTEGER*4 DIVER(2)
|
INTEGER*4 DIVER(2)
|
INTEGER*4 LOG10(2)
|
INTEGER*4 LOG10(2)
|
INTEGER*4 SC, CRAY1(38), J
|
INTEGER*4 SC, CRAY1(38), J
|
COMMON /D9MACH/ CRAY1
|
COMMON /D9MACH/ CRAY1
|
SAVE SMALL, LARGE, RIGHT, DIVER, LOG10, SC
|
SAVE SMALL, LARGE, RIGHT, DIVER, LOG10, SC
|
DOUBLE PRECISION DMACH(5)
|
DOUBLE PRECISION DMACH(5)
|
EQUIVALENCE (DMACH(1),SMALL(1))
|
EQUIVALENCE (DMACH(1),SMALL(1))
|
EQUIVALENCE (DMACH(2),LARGE(1))
|
EQUIVALENCE (DMACH(2),LARGE(1))
|
EQUIVALENCE (DMACH(3),RIGHT(1))
|
EQUIVALENCE (DMACH(3),RIGHT(1))
|
EQUIVALENCE (DMACH(4),DIVER(1))
|
EQUIVALENCE (DMACH(4),DIVER(1))
|
EQUIVALENCE (DMACH(5),LOG10(1))
|
EQUIVALENCE (DMACH(5),LOG10(1))
|
C THIS VERSION ADAPTS AUTOMATICALLY TO MOST CURRENT MACHINES.
|
C THIS VERSION ADAPTS AUTOMATICALLY TO MOST CURRENT MACHINES.
|
C R1MACH CAN HANDLE AUTO-DOUBLE COMPILING, BUT THIS VERSION OF
|
C R1MACH CAN HANDLE AUTO-DOUBLE COMPILING, BUT THIS VERSION OF
|
C D1MACH DOES NOT, BECAUSE WE DO NOT HAVE QUAD CONSTANTS FOR
|
C D1MACH DOES NOT, BECAUSE WE DO NOT HAVE QUAD CONSTANTS FOR
|
C MANY MACHINES YET.
|
C MANY MACHINES YET.
|
C TO COMPILE ON OLDER MACHINES, ADD A C IN COLUMN 1
|
C TO COMPILE ON OLDER MACHINES, ADD A C IN COLUMN 1
|
C ON THE NEXT LINE
|
C ON THE NEXT LINE
|
DATA SC/0/
|
DATA SC/0/
|
C AND REMOVE THE C FROM COLUMN 1 IN ONE OF THE SECTIONS BELOW.
|
C AND REMOVE THE C FROM COLUMN 1 IN ONE OF THE SECTIONS BELOW.
|
C CONSTANTS FOR EVEN OLDER MACHINES CAN BE OBTAINED BY
|
C CONSTANTS FOR EVEN OLDER MACHINES CAN BE OBTAINED BY
|
C mail netlib@research.bell-labs.com
|
C mail netlib@research.bell-labs.com
|
C send old1mach from blas
|
C send old1mach from blas
|
C PLEASE SEND CORRECTIONS TO dmg OR ehg@bell-labs.com.
|
C PLEASE SEND CORRECTIONS TO dmg OR ehg@bell-labs.com.
|
C
|
C
|
C MACHINE CONSTANTS FOR THE HONEYWELL DPS 8/70 SERIES.
|
C MACHINE CONSTANTS FOR THE HONEYWELL DPS 8/70 SERIES.
|
C DATA SMALL(1),SMALL(2) / O402400000000, O000000000000 /
|
C DATA SMALL(1),SMALL(2) / O402400000000, O000000000000 /
|
C DATA LARGE(1),LARGE(2) / O376777777777, O777777777777 /
|
C DATA LARGE(1),LARGE(2) / O376777777777, O777777777777 /
|
C DATA RIGHT(1),RIGHT(2) / O604400000000, O000000000000 /
|
C DATA RIGHT(1),RIGHT(2) / O604400000000, O000000000000 /
|
C DATA DIVER(1),DIVER(2) / O606400000000, O000000000000 /
|
C DATA DIVER(1),DIVER(2) / O606400000000, O000000000000 /
|
C DATA LOG10(1),LOG10(2) / O776464202324, O117571775714 /, SC/987/
|
C DATA LOG10(1),LOG10(2) / O776464202324, O117571775714 /, SC/987/
|
C
|
C
|
C MACHINE CONSTANTS FOR PDP-11 FORTRANS SUPPORTING
|
C MACHINE CONSTANTS FOR PDP-11 FORTRANS SUPPORTING
|
C 32-BIT INTEGER*4S.
|
C 32-BIT INTEGER*4S.
|
C DATA SMALL(1),SMALL(2) / 8388608, 0 /
|
C DATA SMALL(1),SMALL(2) / 8388608, 0 /
|
C DATA LARGE(1),LARGE(2) / 2147483647, -1 /
|
C DATA LARGE(1),LARGE(2) / 2147483647, -1 /
|
C DATA RIGHT(1),RIGHT(2) / 612368384, 0 /
|
C DATA RIGHT(1),RIGHT(2) / 612368384, 0 /
|
C DATA DIVER(1),DIVER(2) / 620756992, 0 /
|
C DATA DIVER(1),DIVER(2) / 620756992, 0 /
|
C DATA LOG10(1),LOG10(2) / 1067065498, -2063872008 /, SC/987/
|
C DATA LOG10(1),LOG10(2) / 1067065498, -2063872008 /, SC/987/
|
C
|
C
|
C MACHINE CONSTANTS FOR THE UNIVAC 1100 SERIES.
|
C MACHINE CONSTANTS FOR THE UNIVAC 1100 SERIES.
|
C DATA SMALL(1),SMALL(2) / O000040000000, O000000000000 /
|
C DATA SMALL(1),SMALL(2) / O000040000000, O000000000000 /
|
C DATA LARGE(1),LARGE(2) / O377777777777, O777777777777 /
|
C DATA LARGE(1),LARGE(2) / O377777777777, O777777777777 /
|
C DATA RIGHT(1),RIGHT(2) / O170540000000, O000000000000 /
|
C DATA RIGHT(1),RIGHT(2) / O170540000000, O000000000000 /
|
C DATA DIVER(1),DIVER(2) / O170640000000, O000000000000 /
|
C DATA DIVER(1),DIVER(2) / O170640000000, O000000000000 /
|
C DATA LOG10(1),LOG10(2) / O177746420232, O411757177572 /, SC/987/
|
C DATA LOG10(1),LOG10(2) / O177746420232, O411757177572 /, SC/987/
|
C
|
C
|
C ON FIRST CALL, IF NO DATA UNCOMMENTED, TEST MACHINE TYPES.
|
C ON FIRST CALL, IF NO DATA UNCOMMENTED, TEST MACHINE TYPES.
|
IF (SC .NE. 987) THEN
|
IF (SC .NE. 987) THEN
|
DMACH(1) = 1.D13
|
DMACH(1) = 1.D13
|
IF ( SMALL(1) .EQ. 1117925532
|
IF ( SMALL(1) .EQ. 1117925532
|
* .AND. SMALL(2) .EQ. -448790528) THEN
|
* .AND. SMALL(2) .EQ. -448790528) THEN
|
* *** IEEE BIG ENDIAN ***
|
* *** IEEE BIG ENDIAN ***
|
SMALL(1) = 1048576
|
SMALL(1) = 1048576
|
SMALL(2) = 0
|
SMALL(2) = 0
|
LARGE(1) = 2146435071
|
LARGE(1) = 2146435071
|
LARGE(2) = -1
|
LARGE(2) = -1
|
RIGHT(1) = 1017118720
|
RIGHT(1) = 1017118720
|
RIGHT(2) = 0
|
RIGHT(2) = 0
|
DIVER(1) = 1018167296
|
DIVER(1) = 1018167296
|
DIVER(2) = 0
|
DIVER(2) = 0
|
LOG10(1) = 1070810131
|
LOG10(1) = 1070810131
|
LOG10(2) = 1352628735
|
LOG10(2) = 1352628735
|
ELSE IF ( SMALL(2) .EQ. 1117925532
|
ELSE IF ( SMALL(2) .EQ. 1117925532
|
* .AND. SMALL(1) .EQ. -448790528) THEN
|
* .AND. SMALL(1) .EQ. -448790528) THEN
|
* *** IEEE LITTLE ENDIAN ***
|
* *** IEEE LITTLE ENDIAN ***
|
SMALL(2) = 1048576
|
SMALL(2) = 1048576
|
SMALL(1) = 0
|
SMALL(1) = 0
|
LARGE(2) = 2146435071
|
LARGE(2) = 2146435071
|
LARGE(1) = -1
|
LARGE(1) = -1
|
RIGHT(2) = 1017118720
|
RIGHT(2) = 1017118720
|
RIGHT(1) = 0
|
RIGHT(1) = 0
|
DIVER(2) = 1018167296
|
DIVER(2) = 1018167296
|
DIVER(1) = 0
|
DIVER(1) = 0
|
LOG10(2) = 1070810131
|
LOG10(2) = 1070810131
|
LOG10(1) = 1352628735
|
LOG10(1) = 1352628735
|
ELSE IF ( SMALL(1) .EQ. -2065213935
|
ELSE IF ( SMALL(1) .EQ. -2065213935
|
* .AND. SMALL(2) .EQ. 10752) THEN
|
* .AND. SMALL(2) .EQ. 10752) THEN
|
* *** VAX WITH D_FLOATING ***
|
* *** VAX WITH D_FLOATING ***
|
SMALL(1) = 128
|
SMALL(1) = 128
|
SMALL(2) = 0
|
SMALL(2) = 0
|
LARGE(1) = -32769
|
LARGE(1) = -32769
|
LARGE(2) = -1
|
LARGE(2) = -1
|
RIGHT(1) = 9344
|
RIGHT(1) = 9344
|
RIGHT(2) = 0
|
RIGHT(2) = 0
|
DIVER(1) = 9472
|
DIVER(1) = 9472
|
DIVER(2) = 0
|
DIVER(2) = 0
|
LOG10(1) = 546979738
|
LOG10(1) = 546979738
|
LOG10(2) = -805796613
|
LOG10(2) = -805796613
|
ELSE IF ( SMALL(1) .EQ. 1267827943
|
ELSE IF ( SMALL(1) .EQ. 1267827943
|
* .AND. SMALL(2) .EQ. 704643072) THEN
|
* .AND. SMALL(2) .EQ. 704643072) THEN
|
* *** IBM MAINFRAME ***
|
* *** IBM MAINFRAME ***
|
SMALL(1) = 1048576
|
SMALL(1) = 1048576
|
SMALL(2) = 0
|
SMALL(2) = 0
|
LARGE(1) = 2147483647
|
LARGE(1) = 2147483647
|
LARGE(2) = -1
|
LARGE(2) = -1
|
RIGHT(1) = 856686592
|
RIGHT(1) = 856686592
|
RIGHT(2) = 0
|
RIGHT(2) = 0
|
DIVER(1) = 873463808
|
DIVER(1) = 873463808
|
DIVER(2) = 0
|
DIVER(2) = 0
|
LOG10(1) = 1091781651
|
LOG10(1) = 1091781651
|
LOG10(2) = 1352628735
|
LOG10(2) = 1352628735
|
ELSE IF ( SMALL(1) .EQ. 1120022684
|
ELSE IF ( SMALL(1) .EQ. 1120022684
|
* .AND. SMALL(2) .EQ. -448790528) THEN
|
* .AND. SMALL(2) .EQ. -448790528) THEN
|
* *** CONVEX C-1 ***
|
* *** CONVEX C-1 ***
|
SMALL(1) = 1048576
|
SMALL(1) = 1048576
|
SMALL(2) = 0
|
SMALL(2) = 0
|
LARGE(1) = 2147483647
|
LARGE(1) = 2147483647
|
LARGE(2) = -1
|
LARGE(2) = -1
|
RIGHT(1) = 1019215872
|
RIGHT(1) = 1019215872
|
RIGHT(2) = 0
|
RIGHT(2) = 0
|
DIVER(1) = 1020264448
|
DIVER(1) = 1020264448
|
DIVER(2) = 0
|
DIVER(2) = 0
|
LOG10(1) = 1072907283
|
LOG10(1) = 1072907283
|
LOG10(2) = 1352628735
|
LOG10(2) = 1352628735
|
ELSE IF ( SMALL(1) .EQ. 815547074
|
ELSE IF ( SMALL(1) .EQ. 815547074
|
* .AND. SMALL(2) .EQ. 58688) THEN
|
* .AND. SMALL(2) .EQ. 58688) THEN
|
* *** VAX G-FLOATING ***
|
* *** VAX G-FLOATING ***
|
SMALL(1) = 16
|
SMALL(1) = 16
|
SMALL(2) = 0
|
SMALL(2) = 0
|
LARGE(1) = -32769
|
LARGE(1) = -32769
|
LARGE(2) = -1
|
LARGE(2) = -1
|
RIGHT(1) = 15552
|
RIGHT(1) = 15552
|
RIGHT(2) = 0
|
RIGHT(2) = 0
|
DIVER(1) = 15568
|
DIVER(1) = 15568
|
DIVER(2) = 0
|
DIVER(2) = 0
|
LOG10(1) = 1142112243
|
LOG10(1) = 1142112243
|
LOG10(2) = 2046775455
|
LOG10(2) = 2046775455
|
ELSE
|
ELSE
|
DMACH(2) = 1.D27 + 1
|
DMACH(2) = 1.D27 + 1
|
DMACH(3) = 1.D27
|
DMACH(3) = 1.D27
|
LARGE(2) = LARGE(2) - RIGHT(2)
|
LARGE(2) = LARGE(2) - RIGHT(2)
|
IF (LARGE(2) .EQ. 64 .AND. SMALL(2) .EQ. 0) THEN
|
IF (LARGE(2) .EQ. 64 .AND. SMALL(2) .EQ. 0) THEN
|
CRAY1(1) = 67291416
|
CRAY1(1) = 67291416
|
DO 10 J = 1, 20
|
DO 10 J = 1, 20
|
CRAY1(J+1) = CRAY1(J) + CRAY1(J)
|
CRAY1(J+1) = CRAY1(J) + CRAY1(J)
|
10 CONTINUE
|
10 CONTINUE
|
CRAY1(22) = CRAY1(21) + 321322
|
CRAY1(22) = CRAY1(21) + 321322
|
DO 20 J = 22, 37
|
DO 20 J = 22, 37
|
CRAY1(J+1) = CRAY1(J) + CRAY1(J)
|
CRAY1(J+1) = CRAY1(J) + CRAY1(J)
|
20 CONTINUE
|
20 CONTINUE
|
IF (CRAY1(38) .EQ. SMALL(1)) THEN
|
IF (CRAY1(38) .EQ. SMALL(1)) THEN
|
* *** CRAY ***
|
* *** CRAY ***
|
CALL I1MCRY(SMALL(1), J, 8285, 8388608, 0)
|
CALL I1MCRY(SMALL(1), J, 8285, 8388608, 0)
|
SMALL(2) = 0
|
SMALL(2) = 0
|
CALL I1MCRY(LARGE(1), J, 24574, 16777215, 16777215)
|
CALL I1MCRY(LARGE(1), J, 24574, 16777215, 16777215)
|
CALL I1MCRY(LARGE(2), J, 0, 16777215, 16777214)
|
CALL I1MCRY(LARGE(2), J, 0, 16777215, 16777214)
|
CALL I1MCRY(RIGHT(1), J, 16291, 8388608, 0)
|
CALL I1MCRY(RIGHT(1), J, 16291, 8388608, 0)
|
RIGHT(2) = 0
|
RIGHT(2) = 0
|
CALL I1MCRY(DIVER(1), J, 16292, 8388608, 0)
|
CALL I1MCRY(DIVER(1), J, 16292, 8388608, 0)
|
DIVER(2) = 0
|
DIVER(2) = 0
|
CALL I1MCRY(LOG10(1), J, 16383, 10100890, 8715215)
|
CALL I1MCRY(LOG10(1), J, 16383, 10100890, 8715215)
|
CALL I1MCRY(LOG10(2), J, 0, 16226447, 9001388)
|
CALL I1MCRY(LOG10(2), J, 0, 16226447, 9001388)
|
ELSE
|
ELSE
|
WRITE(*,9000)
|
WRITE(*,9000)
|
STOP 779
|
STOP 779
|
END IF
|
END IF
|
ELSE
|
ELSE
|
WRITE(*,9000)
|
WRITE(*,9000)
|
STOP 779
|
STOP 779
|
END IF
|
END IF
|
END IF
|
END IF
|
SC = 987
|
SC = 987
|
END IF
|
END IF
|
* SANITY CHECK
|
* SANITY CHECK
|
IF (DMACH(4) .GE. 1.0D0) STOP 778
|
IF (DMACH(4) .GE. 1.0D0) STOP 778
|
IF (I .LT. 1 .OR. I .GT. 5) THEN
|
IF (I .LT. 1 .OR. I .GT. 5) THEN
|
WRITE(*,*) 'D1MACH(I): I =',I,' is out of bounds.'
|
WRITE(*,*) 'D1MACH(I): I =',I,' is out of bounds.'
|
STOP
|
STOP
|
END IF
|
END IF
|
D1MACH = DMACH(I)
|
D1MACH = DMACH(I)
|
RETURN
|
RETURN
|
9000 FORMAT(/' Adjust D1MACH by uncommenting data statements'/
|
9000 FORMAT(/' Adjust D1MACH by uncommenting data statements'/
|
*' appropriate for your machine.')
|
*' appropriate for your machine.')
|
* /* Standard C source for D1MACH -- remove the * in column 1 */
|
* /* Standard C source for D1MACH -- remove the * in column 1 */
|
*#include <stdio.h>
|
*#include <stdio.h>
|
*#include <float.h>
|
*#include <float.h>
|
*#include <math.h>
|
*#include <math.h>
|
*double d1mach_(long *i)
|
*double d1mach_(long *i)
|
*{
|
*{
|
* switch(*i){
|
* switch(*i){
|
* case 1: return DBL_MIN;
|
* case 1: return DBL_MIN;
|
* case 2: return DBL_MAX;
|
* case 2: return DBL_MAX;
|
* case 3: return DBL_EPSILON/FLT_RADIX;
|
* case 3: return DBL_EPSILON/FLT_RADIX;
|
* case 4: return DBL_EPSILON;
|
* case 4: return DBL_EPSILON;
|
* case 5: return log10((double)FLT_RADIX);
|
* case 5: return log10((double)FLT_RADIX);
|
* }
|
* }
|
* fprintf(stderr, "invalid argument: d1mach(%ld)\n", *i);
|
* fprintf(stderr, "invalid argument: d1mach(%ld)\n", *i);
|
* exit(1); return 0; /* some compilers demand return values */
|
* exit(1); return 0; /* some compilers demand return values */
|
*}
|
*}
|
END
|
END
|
SUBROUTINE I1MCRY(A, A1, B, C, D)
|
SUBROUTINE I1MCRY(A, A1, B, C, D)
|
**** SPECIAL COMPUTATION FOR OLD CRAY MACHINES ****
|
**** SPECIAL COMPUTATION FOR OLD CRAY MACHINES ****
|
INTEGER*4 A, A1, B, C, D
|
INTEGER*4 A, A1, B, C, D
|
A1 = 16777216*B + C
|
A1 = 16777216*B + C
|
A = 16777216*A1 + D
|
A = 16777216*A1 + D
|
END
|
END
|
|
|
PROGRAM MAIN
|
PROGRAM MAIN
|
DOUBLE PRECISION D1MACH
|
DOUBLE PRECISION D1MACH
|
EXTERNAL D1MACH
|
EXTERNAL D1MACH
|
PRINT *,D1MACH(1)
|
PRINT *,D1MACH(1)
|
PRINT *,D1MACH(2)
|
PRINT *,D1MACH(2)
|
PRINT *,D1MACH(3)
|
PRINT *,D1MACH(3)
|
PRINT *,D1MACH(4)
|
PRINT *,D1MACH(4)
|
PRINT *,D1MACH(5)
|
PRINT *,D1MACH(5)
|
END
|
END
|
|
|
