INTRO (9) NetBSD Kernel Developer's Manual INTRO (9) NAME ...

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HUMANIZE_NUMBER (9) NetBSD Kernel Developer’s Manual HUMANIZE_NUMBER (9)NAMEhumanize_number, format_bytes —format a number into a human readable formSYNOPSISinthumanize_number(char ∗buf , size_t len , uint64_t number , const char ∗suffix ,int divisor );intformat_bytes(char ∗buf , size_t len , uint64_t number);DESCRIPTIONhumanize_numberThe humanize_number() function formats the unsigned 64 bit quantity given in number into buffer.Aspace and then suffix is appended to the end. buffer must be at least len bytes long.If the formatted number (including suffix) would be too long to fit into buffer, then divide number bydivisor until it will. In this case, prefix suffix with the appropriate SI designator. Suitable values ofdivisor are 1024 or 1000 to remain consistent with the common meanings of the SI designator prefixes.The prefixes are:Prefix Description Multiplierk kilo 1024M meg a 1048576G giga 1073741824T tera 1099511627776P peta 1125899906842624E exa 1152921504606846976len must be at least 4 plus the length of suffix, inorder to ensure a useful result is generated intobuffer.format_bytesThe format_bytes() function is a front-end to humanize_number() that calls the latter with asuffix of “B”. Also, if the suffix in the returned buffer would not have a prefix, remove the suffix. Thismeans that a result of “100000” occurs, instead of “100000 B”.RETURN VALUEShumanize_number() and format_bytes() return the number of characters stored in buffer (excludingthe terminating NUL) upon success, or −1 upon failure.HISTORYhumanize_number() and format_bytes() first appeared in NetBSD 1.5.NetBSD 3.0 May 21, 1999 1
HZ (9) NetBSD Kernel Developer’s Manual HZ (9)NAMEhz —system clock frequencySYNOPSIS#include int hz;DESCRIPTIONhz specifies the number of times the hardclock(9) timer ticks per second. hz is hardware-dependent; itcan be overridden (if the machine dependent code supports this) by defining HZ in the kernel configurationfile (see options(4)). Only override the default value if you really know what you are doing.SEE ALSOoptions(4), callout(9), hardclock(9), microtime(9), time_second(9)NetBSD 3.0 September 4, 2001 1
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