XBR2D995%DDATHD21.BITNET@WISCVM.WISC.EDU (05/21/86)
Hello,
we have a serious problem with Aztec-C 3.20a and float arrays. The
program at the end of my message compiles an links correctly, but gives
a guru meditation (00000003.000097B0) wenn started. The program is
compiled and linked with the following command:
CC T3
LN T3.O -lm -lc
The same program gives an assembler error when compiled with
CC T3 +l
We think the problem is related to the expression:
z[k][m] = z[k][m] - z[k][i] * z[i][k]
in the program. Reducing the "complexity" of the statement resolves
both problems.
Any people from Manx listening? Anybody got the same problem?
Regards
Martin
My address: Martin Knoblauch
Technische Hochschule Darmstadt
Dept. for Physical Chemistry (PC 1)
Petersenstrasse 20
D-6100 Darmstadt (West Germany)
BITNET: <XBR2D995@DDATHD21.BITNET>
----------------------------T3.C-------------------------------------
#include <exec/types.h>
#include <libraries/mathffp.h>
#undef NULL
#include <stdio.h>
main()
#define BOR 5
{
int i,k,m;
float a1,a2,a3;
static float z[BOR][BOR];
printf(" programmstart now\n");
for(i=0;i<BOR;i=i+1)
{
z[i][i] = 3.33333;
}
for(i=0;i<BOR;i=i+1)
{
for(k=0;k<BOR;k=k+1)
{
for(m=0;m<BOR;m=m+1)
{
printf(" i k m = %d %d %d \n",i,k,m);
/* The following statement causes the program
to crash (GURU: 00000007:000097b0) when
compiled with CC T3.
Trying to compile the program with
CC T3 -L
gives an assembler error */
z[k][m] = z[k][m] - z[k][i] * z[i][m];
/* The following statements work ok, and there
are no assembler errors. This is no real solotion,
because it slows down the program and makes the
program less understandable.
a1 = z[k][m];
a2 = z[k][i];
a3 = z[i][m];
z[k][m] = a1 - a2 * a3;
*/
}
}
}
}
-----------------------------------------------------------------------