Calculates the length of c characters, which must not exceed 2 ^ 30.

Calculates the length of c characters, which must not exceed 2 ^ 30.

Source code from sqlite3

/*** Compute a string length that is limited to what can be stored in ** lower 30 bits of a 32-bit signed integer. * *** The value returned will never be negative. nor will it ever be greater ** than the actual length of the string. for very long strings (greater ** than 1GiB) the value returned might be less than the true string length. */int sqlite3Strlen30 (const char * z) {if (z = 0) return 0; return 0x3fffffff & (int) strlen (z );}