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S3: Fix zoned decimal negative number representation #564

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S3: Fix zoned decimal negative number representation #564

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10 changes: 5 additions & 5 deletions S3/s3_cpu.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1707,10 +1707,10 @@ int n; /* Significant digit counter */
} /* end function load_decimal */

/*-------------------------------------------------------------------*/
/* Store decimal byte string into packed decimal storage operand */
/* Store decimal byte string into zoned decimal storage operand */
/* */
/* Input: */
/* addr Logical address of packed decimal storage operand */
/* addr Logical address of zoned decimal storage operand */
/* len Length minus one of storage operand (range 0-15) */
/* dec A 31-byte area containing the decimal digits to be */
/* stored. Each byte contains one decimal digit in */
Expand All @@ -1736,9 +1736,9 @@ int i, j, a; /* Array subscripts */
break;
}
}
if (sign == -1) {
PutMem(addr, (GetMem(addr) & 0x0f));
PutMem(addr, (GetMem(addr) | 0xf0));
if (sign == -1) { /* if number is negative */
PutMem(addr, (GetMem(addr) & 0x0f)); /* clear zone bits */
PutMem(addr, (GetMem(addr) | 0xd0)); /* set ZD negative */
}

} /* end function store_decimal */
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