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mwSize NumberOfNonZeros() const
Purpose Return num ber of nonzero elements for sparse array
C++
Syntax
#include "mclcppclass. h"
mwArray a(2, 2, mxDOUBLE_CLASS);
int n = a.NumberOfNonZeros ();// Should return 4
Arguments None
Return
Value
Actual number of n onzero elements in array.
Description Usethismethodtodeterminethesizeoftheofthearray’sdata. If
the underlying array is not sparse, this returns the same value as
NumberOfElements().
Note This meth od does not analyze the actual values of the array
elements. Instead, it returns the number of elements that could
potentially be nonzero. This is exactly the number of elements for which
the sparse m atrix has allocated storage.
C-52
- Compiler 4 1
- User’s Guide 1
- 508-647-7000 (Phone) 2
- 508-647-7001 (Fax) 2
- The MathWorks, Inc 2
- 3 Apple Hill Drive 2
- Natick, MA 01760-2098 2
- Revision History 3
- Troubleshooting 10
- Functions — By Category 11
- Reference Information 11
- C++ Utility Library Reference 13
- Contents 14
- Getting Started 15
- What Is MATLAB Compiler? 16
- Wrapper Files 17
- 1 Getting Star ted 18
- Before You Begin 19
- Component 20
- Magic Square Example 21
- .zip file 23
- Using the mcc Command 24
- For M ore Information 29
- Installation and 31
- Configuration 31
- Requirements 32
- Installation 34
- VC98 directory from 36
- Options Files 42
- Changing the Options File 43
- Compilation Process 45
- 3 Compilation Process 46
- Build Process 47
- Wrapper Code Generation 49
- Archive Creation 49
- C/C++ Compilation 49
- Input and Output Files 50
- CSharedLibrary 51
- C++ Shared Libra 53
- Deployment Process 55
- Over view 56
- Deploying to P rogrammers 57
- 4 Deployment Process 58
- C or C++ Shared Library 59
- Java Component 61
- Deploying to End Users 63
- MCRInstaller.zip 65
- .NET Application 67
- Microsoft Excel Add-In 69
- Working with the MCR 74
- Modifying the Path 75
- Developm en t Env iron ment 79
- Ser vices 80
- Compiler Commands 81
- Command Overview 82
- Using File Extensions 83
- Macro Options 85
- Understanding a Macro Option 85
- Using Pathnames 87
- Using Bundle Files 88
- <type> 90
- C Library Wrapper 91
- Overview 93
- CExample 93
- Using Pragmas 97
- 5 Compiler Commands 100
- Script Files 101
- Compiler Tips 102
- Application 107
- Standalone Applications 109
- Introduction 110
- Compiling the Application 111
- Testing the 111
- 6 Standalone Applications 112
- Linux x86-64 113
- Mac OS X 113
- Intel Mac (Maci) 113
- Running the Application 115
- Coding with M-Files Only 119
- Mixing M-Files and C or C++ 121
- Explanation of mrankp.c 125
- Explanation of This C Code 129
- Libraries 131
- C Shared Library Target 134
- 7 Libraries 136
- Based Shared Libraries 139
- Calling a Shared Library 141
- C++SharedLibraryTarget 147
- C++ Shared Lib rary Target 149
- Exported Function Signature 151
- Type of Application 153
- 8 Troubleshooting 170
- MATLAB Compiler 172
- Deployed Applications 176
- 9 Reference Information 182
- Solaris64 183
- Unsupported Functions 188
- MATLAB Compiler Licensing 191
- Running MCRInstaller.exe 193
- The followi ng co mmand: 195
- Command-Lin 198
- Functions — Alphabetical 199
- %#external 200
- Syntax %#external 200
- %#function 201
- Syntax builder2prj 203
- Examples Example 1 203
- Syntax ctfroot 205
- Syntax deployprint 206
- See Also isdeployed, print 207
- Syntax deploytool 208
- Syntax x = isdeployed 209
- Options -a Add to Archive 215
- -B Specify Bundle File 217
- -c Generate C Code Only 217
- -f Specified Options File 218
- -F Specified Project File 218
- -G Debug Only 219
- -M Direct Pass Through 220
- -N Clear Path 220
- -o Specify Output Name 221
- -p Add Directory to Path 221
- -R Run-Time 222
- -S Create Singleton MCR 222
- -T Specify Target Stage 222
- -v Verbose 223
- -w Warning Messages 223
- -W Wrapper Function 224
- -Y License File 225
- -z Specify Path 225
- -? Help Message 226
- Limitations and 229
- Restrictions 229
- Limitations and Restriction s 230
- MATLAB Code 231
- Workaround 232
- Suppressing Warnings on UNIX 233
- Older Neural Net 235
- MATLAB Compiler Quick 237
- Reference 237
- Create a Library 238
- Example 2 239
- Messages 243
- Error and Warning 243
- B Error and Warning Messages 244
- Compile-Time Errors 245
- Warning M essages 249
- Warning Messages 251
- C++ Utility Library 255
- Primitive Types 256
- Utility Classes 257
- About mwString 258
- Constructors 258
- Operators 258
- Construct empty string 260
- String to make a copy of 265
- String to compare 267
- The result of the comparison 267
- String to copy 273
- The input os tream 273
- About mwException 274
- Error message 277
- About mwArray 283
- Static Methods 285
- Number of elements in array 305
- NumberOfElements() 306
- is returned 323
- Value to assign 340
- -Inf an d les s than Inf 346
- -z option flag 11-27 354
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