scriba_UseCacheFile()

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Call this function to test that the cache file is usable. This function calls the function scriba_GetCacheFileName() to calculate the cache file name.

the cache file exists

is newer than the source file set by scriba_SetFileName()

is a correct ScriptBasic binary file @end itemize then this function alters the source file name property (pszFileName) of the program object so that the call to scriba_LoadBinaryProgram() will try to load the cache file.
```
int scriba_UseCacheFile(pSbProgram pProgram
  )@{
```
The function returns zero or the error code. The function returns SCRIBA_ERROR_FAIL in case the cache file is old, or not valid. Therefore returning a positive value does not neccessarily mean a hard error.
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