82 lines
1.7 KiB
Plaintext
82 lines
1.7 KiB
Plaintext
program main
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fn narrow(value: f64) -> (result i64 i32)
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call std.num.f64_to_i64_result
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var value
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fn zero_ok() -> (result i64 i32)
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call narrow
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binary -
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float 2.5
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float 2.5
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fn negative_ok() -> (result i64 i32)
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call narrow
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binary -
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float 1
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float 13
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fn fractional_err() -> (result i64 i32)
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call narrow
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binary /
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float 7
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float 2
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fn above_high_err() -> (result i64 i32)
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call narrow
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float 9223372036854776000
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fn main() -> i32
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local let value: (result i64 i32)
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call negative_ok
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if
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std.result.is_ok
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var value
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if
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binary =
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std.result.unwrap_ok
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var value
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i64 -12
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int 0
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int 1
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std.result.unwrap_err
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var value
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test "f64 zero narrows to i64"
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local let value: (result i64 i32)
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call zero_ok
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if
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std.result.is_ok
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var value
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binary =
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std.result.unwrap_ok
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var value
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i64 0
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bool false
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test "negative f64 narrows to i64"
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local let value: (result i64 i32)
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call negative_ok
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if
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std.result.is_ok
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var value
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binary =
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std.result.unwrap_ok
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var value
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i64 -12
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bool false
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test "fractional f64 returns err for i64"
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local let value: (result i64 i32)
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call fractional_err
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if
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std.result.is_err
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var value
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binary =
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std.result.unwrap_err
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var value
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int 1
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bool false
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test "above i64 range f64 returns err"
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local let value: (result i64 i32)
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call above_high_err
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if
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std.result.is_err
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var value
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binary =
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std.result.unwrap_err
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var value
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int 1
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bool false
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