66 lines
1.1 KiB
Rust
66 lines
1.1 KiB
Rust
/*
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Module: u64
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*/
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/*
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Function: min_value
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Return the minimal value for a u64
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*/
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pure fn min_value() -> u64 { ret 0u64; }
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/*
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Function: max_value
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Return the maximal value for a u64
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*/
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pure fn max_value() -> u64 { ret 18446744073709551615u64; }
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/*
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Function: to_str
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Convert to a string in a given base
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*/
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fn to_str(n: u64, radix: uint) -> str {
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assert (0u < radix && radix <= 16u);
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let r64 = radix as u64;
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fn digit(n: u64) -> str {
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ret alt n {
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0u64 { "0" }
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1u64 { "1" }
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2u64 { "2" }
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3u64 { "3" }
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4u64 { "4" }
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5u64 { "5" }
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6u64 { "6" }
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7u64 { "7" }
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8u64 { "8" }
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9u64 { "9" }
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10u64 { "a" }
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11u64 { "b" }
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12u64 { "c" }
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13u64 { "d" }
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14u64 { "e" }
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15u64 { "f" }
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_ { fail }
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};
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}
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if n == 0u64 { ret "0"; }
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let s = "";
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let n = n;
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while n > 0u64 { s = digit(n % r64) + s; n /= r64; }
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ret s;
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}
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/*
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Function: str
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Convert to a string
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*/
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fn str(n: u64) -> str { ret to_str(n, 10u); }
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