When evaluated, this vm instruction subtracts the Number argument value to the Number source value and places the result in the Word target as a Number value. There are no conversions made between different types. The result will be returned as a Number data type. This instruction may return an Error value. After the operation, the Instruction Pointer is promoted. The operation of this vm instruction is expressed in the following C expression:



(vmnsub argument source target)

Name Format AIS Types
argument regoffset number
source regoffset number
target regoffset (word:double)



Here are a number of links to Lambda coding examples which contain this instruction in various use cases.



Keyword Links

Here are a number of links to this instruction by related keywords.

[...under construction ]


Instruction Type

Here are a number of links to this instructions of this same type.

vmadd vmaddi vmaddn vmand
vmapply vmargcount vmargfetch vmcadd
vmcall vmcallarg vmcdiv vmcmul
vmcsub vmdebugger vmdiv vmdivi
vmdivn vmdivr vmdivri vmdivrn
vmiadd vmiand vmiandb vmidiv
vmidivr vmimul vmior vmiorb
vmisub vmixor vmixorb vmjump
vmjumpcc vmmove vmmovei vmmoven
vmmul vmmuli vmmuln vmnadd
vmndiv vmndivr vmnmul vmnop
vmnsub vmonerror vmopt vmor
vmpop vmpush vmref vmrefbitvector
vmrefbytevector vmrefdickey vmrefdicvalue vmrefdirkey
vmrefdirvalue vmreffltvector vmrefintvector vmreflongvector
vmrefmatrix vmrefnummatrix vmrefnumvector vmrefobjvector
vmrefpcdvector vmrefshortvector vmrefstring vmrefstrkey
vmrefstrvalue vmrefsymbol vmreftext vmrefvector
vmreturn vmself vmsend vmset
vmsetbitvector vmsetbytevector vmsetdickey vmsetdicvalue
vmsetdirkey vmsetdirvalue vmsetfltvector vmsetintvector
vmsetlongvector vmsetmatrix vmsetnummatrix vmsetnumvector
vmsetobjvector vmsetpcdvector vmsetshortvector vmsetstring
vmsetstrkey vmsetstrvalue vmsetvector vmshl
vmshr vmsmovei vmsub vmsubi
vmsubn vmtestescape vmxor


Argument Types

Here are a number of links which are related to this instructions .

vmadd vmaddi vmaddn vmdiv
vmdivi vmdivn vmdivr vmdivri
vmdivrn vmjumpcc vmmul vmmuli
vmmuln vmnadd vmnatAddNumber vmnatDivNumber
vmnatDivrNumber vmnatJumpCCNumber vmnatLoadFloat vmnatLoadNumber
vmnatMulNumber vmnatSaveFloat vmnatSaveNumber vmnatSubNumber
vmndiv vmndivr vmnmul vmnsub
vmregAbsNumber vmregAddNumber vmregCosNumber vmregDivNumber
vmregDivrNumber vmregInteger vmregJumpCCNumber vmregLoadNumber
vmregLogNumber vmregMoveNumber vmregMulNumber vmregNumber
vmregPwrNumber vmregRefNumber vmregSaveNumber vmregSaveTail
vmregSetFloat vmregSetIntImmediate vmregSetNumber vmregSetXFloat
vmregSetXNumber vmregSinNumber vmregSqrtNumber vmregSubNumber
vmregTanNumber vmsub vmsubi vmsubn
vmvecNumScalar vmvecNumVector vmvecPop vmvecPopNumber
vmvecPush vmvecPushNumber vmvecSwapCC


Virtual Machine Instructions

AIS Lambdas are designed to be write-once-run-anywhere executable objects. This is accomplished via the virtual machine concept of software Lambda execution. Lambda virtual machines are designed to be mapped onto the actual host microchip at the server location, providing faithful Lambda execution wherever the Lambda may travel on the Internet. There are currently several virtual machines operating within Analytic Information Server. The DRM virtual machine uses a Dynamically typed Register Machine model to provide portable Lambda execution from high level dynamically typed instructions all the way to super fast microchip-level register execution. The DRM virtual machine runs in emulation mode during the testing and debug phases of Lambda development, and there is an AIS Lambda debugger available for Lambdas running on this virtual machine. During the final release phases of Lambda development, DRM virtual machine Lambdas are automatically converted to the NATIVE virtual machine on the host computer, using the just-in-time compiler. The NATIVE virtual machine is a faithful machine language translation of the execution rules in the DRM virtual machine onto the actual host microchip at the server location. NATIVE virtual machine execution runs at microchip-level execution speeds.

How do I contact the AIS team?

You can always talk with the AIS at aiserver.sourceforge.net.