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Coerces an expression into a SYS logical code pointer
(LCPTR).
sys (value)
During the evaluation of the parameter to this function, the search path used
for procedure name lookups is limited to the system library file (SYS).
sys:sys (value:any)
- value
An expression to be coerced. All types are valid.
Table 10-16 Derivation of the SYS Bit Pattern
Parameter Type |
Action |
BOOL |
0.1 if TRUE, 0.0 if FALSE. |
U16 U32 SPTR |
Set the SID part to zero. Right justify the original value in the
low-order 32 bits of the offset part with zero fill. |
S16 S32 S64 |
Set the SID part to zero. Right justify the original value in the
low-order 32 bits of the offset part with sign extension. |
LONG Class |
Transfer both parts of the address unchanged. |
EADDR SADDR |
Transfer the SID part unchanged. Transfer the low-order 32 bits of the
offset part. |
STR |
Transfer the ASCII bit pattern for the last eight characters in the
string. Strings shorter than eight characters are treated as if they were
extended on the left with nulls. |
%cmdebug > wl sys(12.304)
SYS %12.304
Coerce the simple long pointer into a SYS logical code pointer.
%cmdebug > wl sys(pub(24.630))
SYS %24.630
The coercion simply changes the associated logical file. Note that no
complicated conversion or range checking is performed.
$nmdat > wl sys( 1 )
SYS $0.1
$nmdat > wl sys( ffff )
SYS $0.ffff
$nmdat > wl sys( 1234abcd )
SYS $0.1234abcd
$nmdat > wl sys( -1 )
SYS $0.ffffffff
$nmdat > wl sys( 1234.5678 )
SYS $1234.5678
$nmdat > wl sys( true )
SYS $0.1
$nmdat > wl sys( "ABCDEFG" )
SYS $414243.44454647
$nmdat > wl sys( prog(1.2) )
SYS $1.2
None
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