Coerces an expression into a SYS logical code pointer (LCPTR).
Syntax |
 |
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).
Formal Declaration |
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Parameters |
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- value
An expression to be coerced. All types are valid.
Table 8-16 Derivation of the SYS Bit Pattern
| Parameter Type | Action |
|---|
| 0.1 if TRUE, 0.0 if FALSE. |
| Set the SID part to zero.
Right justify the original value in the low-order 32 bits of the offset part
with zero fill. |
| Set the SID part to zero. Right justify the original value in the low-order 32 bits of the offset part with sign extension. |
| Transfer both parts of the address unchanged. |
| Transfer the SID part unchanged. Transfer the low-order 32 bits of
the offset part. |
| 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.
|
Examples |
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%cmdebug > wl sys(12.304)
SYS %12.304
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Coerce the simple long pointer into a SYS logical code pointer.
%cmdebug > wl sys(pub(24.630))
SYS %24.630
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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
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Limitations, Restrictions |
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none
