National Instruments 320682C Manual de usuario Pagina 110
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Chapter 3 Analysis Library
© National Instruments Corporation 3-9 LabWindows/CVI Standard Libraries
Return Value
status
integer Refer to error codes in
Table 3-2.
CxDiv
int status = CxDiv (double xReal, double xImaginary, double yReal, yImaginary,
double *outputReal, double *outputImaginary);
Purpose
Divides two complex numbers. The function obtains the resulting complex number by using the
following formulas.
zr = (xr*yr + xi*yi) / (yr
2
+ yi
2
)
zi = (xi*yr - xr*yi ) / (yr
2
+ yi
2
)
Parameters
Input
xReal
double-precision Real part of x.
xImaginary
double-precision Imaginary part of x.
yReal
double-precision Real part of y.
yImaginary
double-precision Imaginary part of y.
Output
outputReal
double-precision Real part of z.
outputImaginary
double-precision Imaginary part of z.
Return Value
status
integer Refer to error codes in
Table 3-2.
- LabWindows 1
- Warranty 3
- Copyright 3
- Trademarks 3
- Chapter 5 10
- RS-232 Library 10
- DDE Library 11
- Chapter 7 11
- TCP Library 11
- Chapter 6 11
- Chapter 8 12
- Utility Library 12
- Contents 13
- Chapter 9 14
- X Property Library 14
- Chapter 10 14
- Easy I/O for DAQ Library 14
- Appendix A 15
- Customer Communication 15
- Glossary 15
- About This Manual 17
- Related Documentation 20
- Chapter 1 21
- ANSI C Library 21
- Low-Level I/O Functions 22
- Standard Language Additions 22
- ANSI C Library Chapter 1 24
- Character Processing 25
- String Processing 25
- Input/Output Facilities 26
- Mathematical Functions 26
- Time and Date Functions 26
- Control Functions 27
- Chapter 1 ANSI C Library 29
- Chapter 2 31
- Formatting and I/O Library 31
- ArrayToFile 34
- CloseFile 37
- CompareBytes 37
- CompareStrings 38
- CopyBytes 39
- CopyString 40
- FileToArray 41
- FillBytes 43
- FindPattern 43
- GetFileInfo 47
- GetFmtErrNdx 48
- GetFmtIOError 48
- GetFmtIOErrorString 49
- NumFmtdBytes 50
- OpenFile 50
- ReadFile 52
- ReadLine 53
- ScanFile 55
- SetFilePtr 56
- StringLength 58
- StringLowerCase 58
- StringUpperCase 59
- WriteFile 59
- WriteLine 60
- Formatting Functions 62
- %s %100f %i[b2u] 64
- Scanning Functions 70
- Chapter 3 102
- Analysis Library 102
- Analysis Library Chapter 3 103
- Chapter 3 Analysis Library 104
- Reporting Analysis Errors 105
- CxLinEv1D 112
- Determinant 117
- DotProduct 119
- GetAnalysisErrorString 120
- Histogram 120
- InvMatrix 121
- MatrixMul 124
- Parameter Discussion 124
- MaxMin1D 125
- MaxMin2D 125
- Subset1D 133
- ToPolar1D 134
- ToRect1D 136
- Transpose 137
- Error Conditions 138
- Chapter 4 139
- GPIB/GPIB-488.2 Library 139
- GPIB Library Concepts 143
- Device and Board Functions 145
- Automatic Serial Polling 145
- Read and Write Termination 147
- Timeouts 147
- Limitations on Transfer Size 149
- Multithreading 149
- GPIB Function Reference 151
- CloseInstrDevs 152
- ThreadIbcnt 160
- ThreadIbcntl 160
- ThreadIberr 161
- ThreadIbsta 163
- RS-232 Library Chapter 5 166
- Using RS-485 167
- Reporting RS-232 Errors 167
- Troubleshooting 167
- RS-232 Cable Information 168
- Chapter 5 RS-232 Library 169
- Handshaking 170
- CloseCom 172
- ComBreak 173
- ComFromFile 173
- ComRdByte 176
- ComRdTerm 176
- ComSetEscape 178
- ComToFile 179
- ComWrtByte 181
- FlushInQ 182
- FlushOutQ 183
- GetComStat 183
- GetInQLen 184
- GetOutQLen 185
- GetRS232ErrorString 186
- InstallComCallback 186
- OpenComConfig 190
- ReturnRS232Err 192
- SetComTime 193
- SetCTSMode 194
- SetXMode 195
- XModemConfig 195
- XModemReceive 197
- XModemSend 198
- DDE Clients and Servers 203
- The DDE Callback Function 203
- DDE Links 205
- Chapter 6 DDE Library 206
- AdviseDDEDataReady 207
- BroadcastDDEDataReady 209
- ClientDDEExecute 210
- ClientDDERead 211
- ClientDDEWrite 212
- ConnectToDDEServer 214
- DDE Library Chapter 6 215
- DisconnectFromDDEServer 216
- GetDDEErrorString 216
- RegisterDDEServer 217
- ServerDDEWrite 220
- SetUpDDEHotLink 221
- SetUpDDEWarmLink 222
- TerminateDDELink 223
- TCP Clients and Servers 227
- The TCP Callback Function 227
- ClientTCPRead 228
- ClientTCPWrite 229
- ConnectToTCPServer 230
- TCP Library Chapter 7 231
- TCP_DISCONNECT 231
- TCP_DATAREADY 231
- DisconnectFromTCPServer 232
- DisconnectTCPClient 232
- GetTCPErrorString 233
- RegisterTCPServer 233
- Chapter 7 TCP Library 234
- TCP_CONNECT 234
- ServerTCPRead 235
- ServerTCPWrite 236
- UnregisterTCPServer 236
- Utility Library Chapter 8 239
- Chapter 8 Utility Library 240
- Breakpoint 243
- CloseCVIRTE 243
- CopyFile 244
- DeleteDir 247
- DeleteFile 247
- DisableBreakOnLibraryErrors 248
- DisableInterrupts 249
- DisableTaskSwitching 249
- EnableBreakOnLibraryErrors 252
- EnableInterrupts 252
- EnableTaskSwitching 253
- ExecutableHasTerminated 253
- GetBreakOnLibraryErrors 254
- GetBreakOnProtectionErrors 255
- GetCVIVersion 255
- GetCurrentPlatform 256
- GetDrive 257
- GetExternalModuleAddr 258
- GetFileAttrs 260
- GetFileDate 261
- GetFileSize 262
- GetFileTime 263
- GetFirstFile 264
- GetFullPathFromProject 266
- GetInterruptState 267
- GetModuleDir 268
- GetNextFile 270
- GetPersistentVariable 270
- GetProjectDir 271
- GetStdioPort 272
- GetStdioWindowOptions 272
- GetStdioWindowPosition 273
- GetStdioWindowSize 274
- GetStdioWindowVisibility 274
- GetSystemDate 275
- GetSystemTime 276
- GetWindowDisplaySetting 276
- InitCVIRTE 277
- InStandaloneExecutable 280
- LaunchExecutable 281
- LaunchExecutableEx 284
- CVI arg1 arg2 arg3 285
- LoadExternalModule 286
- LoadExternalModuleEx 289
- MakePathname 292
- ReadFromPhysicalMemory 294
- ReadFromPhysicalMemoryEx 295
- ReleaseExternalModule 296
- RenameFile 297
- RetireExecutableHandle 298
- RoundRealToNearestInteger 298
- RunExternalModule 299
- SetBreakOnLibraryErrors 300
- SetBreakOnProtectionErrors 301
- SetDrive 303
- SetFileAttrs 304
- SetFileDate 305
- SetFileTime 307
- SetPersistentVariable 308
- SetStdioPort 308
- SetStdioWindowOptions 309
- SetStdioWindowPosition 311
- SetStdioWindowSize 312
- SetStdioWindowVisibility 313
- SetSystemDate 313
- SetSystemTime 314
- SplitPath 314
- SyncWait 316
- SystemHelp 316
- TerminateExecutable 319
- TruncateRealNumber 321
- UnloadExternalModule 321
- WriteToPhysicalMemory 322
- WriteToPhysicalMemoryEx 323
- X Interclient Communication 326
- Property Handles and Types 327
- The Hidden Window 327
- Property Callback Functions 328
- Error Codes 328
- Chapter 9 X Property Library 329
- X Property Library Chapter 9 330
- ConnectToXDisplay 331
- CreateXProperty 333
- CreateXPropType 334
- DestroyXProperty 336
- DestroyXPropType 337
- DisconnectFromXDisplay 338
- GetXPropErrorString 339
- GetXPropertyName 339
- GetXPropertyType 340
- GetXPropTypeName 341
- GetXPropTypeSize 342
- GetXPropTypeUnit 343
- GetXWindowPropertyItem 344
- GetXWindowPropertyValue 346
- InstallXPropertyCallback 349
- PropertyCallbackTypeX 350
- PutXWindowPropertyItem 351
- PutXWindowPropertyValue 353
- RemoveXWindowProperty 355
- UninstallXPropertyCallback 357
- Device Numbers 361
- Command Strings 363
- AIAcquireTriggeredWaveforms 365
- x 369
- x x 369
- x x 369
- x x 369
- AIAcquireWaveforms 370
- AICheckAcquisition 372
- AIClearAcquisition 372
- AIReadAcquisition 373
- AISampleChannel 374
- AISampleChannels 375
- AIStartAcquisition 376
- AOClearWaveforms 377
- AOGenerateWaveforms 378
- AOUpdateChannel 379
- AOUpdateChannels 380
- ContinuousPulseGenConfig 381
- CounterEventOrTimeConfig 383
- CounterMeasureFrequency 386
- CounterRead 389
- CounterStart 390
- CounterStop 391
- DelayedPulseGenConfig 391
- FrequencyDividerConfig 394
- GetAILimitsOfChannel 397
- GetChannelIndices 398
- GetChannelNameFromIndex 399
- GetDAQErrorString 400
- GetNumChannels 401
- GroupByChannel 401
- ICounterControl 402
- PlotLastAIWaveformsPopup 404
- PulseWidthOrPeriodMeasConfig 405
- ReadFromDigitalLine 406
- ReadFromDigitalPort 408
- SetEasyIOMultitaskingMode 410
- WriteToDigitalLine 410
- "SCx!MDy!0" 411
- WriteToDigitalPort 412
- Fax and Telephone Support 425
- Technical Support Form 426
- National Instruments Products 427
- Other Products 427
- Documentation Comment Form 428
- Numbers/Symbols 436
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