PETSc version 3.17.0
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# PetscVSNPrintf

The PETSc version of vsnprintf(). Converts a PETSc format string into a standard C format string and then puts all the function arguments into a string using the format statement.

### Synopsis

    PetscErrorCode PetscVSNPrintf(char *str,size_t len,const char *format,size_t *fullLength,va_list Argp)

### Input Parameters

| str | - location to put result
| len | - the amount of space in str + format - the PETSc format string
| fullLength | - the amount of space in str actually used.

### Developer Notes

this function may be called from an error handler, if an error occurs when it is called by the error handler than likely a recursion will occur and possible crash.

### See Also

PetscVSNPrintf(), PetscErrorPrintf(), PetscVPrintf()

### Level

developer

### Location

src/sys/fileio/mprint.c
Index of all Sys routines
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