On Nov 28 2021, Paul Smith wrote: >> The C standard defines the largest unsigned long long value >> as 18446744073709551615, the largest signed long long value >> as 9223372036854775807, and the smallest signed long long value as - >> 9223372036854775808. So, the definition cannot be wrong in any >> standards-conforming implementation of C.
Andreas Schwab (6 December 2021 12:30) replied: > This is wrong. These are *minimum* limits. For reference: the number of bytes needed for the ASCII decimal representation (including terminating '\0') of an integral type is bounded (fairly tightly) above by 53 * sizeof(type) / 22 + (3 if type is signed else 2) When I need a compile-time constant for an array buffer size, this is what I use. Fuller explanation here: https://github.com/ediosyncratic/study.py/blob/master/maths/buffersize.py Eddy.
