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33 .Nd format a number from human readable form
40 .Fa "const char *buf" "uint64_t *num"
45 function unformats the
47 string and stores a unsigned 64-bit quantity at address pointed out by the
54 follows the SI power of two convention.
57 .Bl -column "Prefix" "Description" "1000000000000000000" -offset indent
58 .It Sy "Prefix" Ta Sy "Description" Ta Sy "Multiplier"
59 .It Li k Ta No kilo Ta 1024
60 .It Li M Ta No mega Ta 1048576
61 .It Li G Ta No giga Ta 1073741824
62 .It Li T Ta No tera Ta 1099511627776
63 .It Li P Ta No peta Ta 1125899906842624
64 .It Li E Ta No exa Ta 1152921504606846976
71 function will fail if:
74 The given string contains no digits.
76 An unrecognized prefix was given.
78 Result doesn't fit into 64 bits.
85 function first appeared in