HelenOS sources

MAX_DOUBLE_STR_LEN   41 uspace/lib/c/include/double_to_str.h #define MAX_DOUBLE_STR_LEN (20 + 1)
MAX_DOUBLE_STR_LEN   41 uspace/lib/posix/include/libc/double_to_str.h #define MAX_DOUBLE_STR_LEN (20 + 1)
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