1VSCNPRINTF(9) Basic C Library Functions VSCNPRINTF(9)
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6 vscnprintf - Format a string and place it in a buffer
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9 int vscnprintf(char * buf, size_t size, const char * fmt,
10 va_list args);
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13 buf
14 The buffer to place the result into
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16 size
17 The size of the buffer, including the trailing null space
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19 fmt
20 The format string to use
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22 args
23 Arguments for the format string
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26 The return value is the number of characters which have been written
27 into the buf not including the trailing ´\0´. If size is == 0 the
28 function returns 0.
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30 Call this function if you are already dealing with a va_list. You
31 probably want scnprintf instead.
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33 See the vsnprintf documentation for format string extensions over C99.
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36Kernel Hackers Manual 2.6. June 2019 VSCNPRINTF(9)