in src/options.cc [65:79]
unsigned long long Options::getSizeMultiplier(char specifier, size_t block_size) {
switch (specifier) {
case 'K':
return 1024;
case 'M':
return 1048576;
case 'G':
return 1073741824;
case 'b':
return block_size;
default:
assert(!"Invalid size specifier!");
}
return 0;
}