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Log_Debug Function

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Header: #include <applibs/log.h>

Logs and formats a debug message with printf formatting supported by the implementation of printf() included in Azure Sphere. Formatting may differ from the GNU C library as documented in the MUSL wiki. You must provide an additional parameter for every argument specification defined in the fmt string. This function is thread safe.

int Log_Debug(const char * fmt, ...);

Parameters

  • fmt The message string to log, with optional argument specifications.

Errors

Returns -1 if an error is encountered and sets errno to the error value.

  • EFAULT: the fmt is NULL.

Any other errno may also be specified; such errors aren't deterministic and the same behavior might not be retained through system updates.

Return value

Returns 0 for success, or -1 in the case of failure, in which case errno is set to the error.