paupino

paupino/rust-decimal

Decimal number implementation written in pure Rust suitable for financial and fixed-precision calculations.

23 good first / help-wanted issues · Rust · last activity Oct 5, 2026

1.3K stars 230 forks 1.3K watchers Rust MIT License
decimal financial-calculations number rust
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23 Open Issues Need Help Last updated: Oct 5, 2026

Open Issues Need Help

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PostgreSQL NUMERIC decode double-rounds, and zero loses its scale on encode 7 days ago
bug help wanted
paupino/rust-decimal
1.3K

Decimal number implementation written in pure Rust suitable for financial and fixed-precision calculations.

Rust
#decimal#financial-calculations#number#rust
diesel MySQL `FromSql<Numeric>` misreads columns that aren't DECIMAL 7 days ago
bug help wanted
paupino/rust-decimal
1.3K

Decimal number implementation written in pure Rust suitable for financial and fixed-precision calculations.

Rust
#decimal#financial-calculations#number#rust
`from_f64_retain` returns wrong trailing digits 8 days ago
bug help wanted
paupino/rust-decimal
1.3K

Decimal number implementation written in pure Rust suitable for financial and fixed-precision calculations.

Rust
#decimal#financial-calculations#number#rust
`{:e}` drops trailing zeros only when every digit after the first is zero 9 days ago
bug help wanted
paupino/rust-decimal
1.3K

Decimal number implementation written in pure Rust suitable for financial and fixed-precision calculations.

Rust
#decimal#financial-calculations#number#rust
Scientific notation parsing rounds the mantissa before applying the exponent 9 days ago
bug help wanted
paupino/rust-decimal
1.3K

Decimal number implementation written in pure Rust suitable for financial and fixed-precision calculations.

Rust
#decimal#financial-calculations#number#rust
`from_str_radix` accepts values that don't fit and misreads fractional digits for radix other than 10 10 days ago
bug help wanted
paupino/rust-decimal
1.3K

Decimal number implementation written in pure Rust suitable for financial and fixed-precision calculations.

Rust
#decimal#financial-calculations#number#rust
serde: `float_option` and `arbitrary_precision_option` lose `Some` values in non-self-describing formats 16 days ago
bug help wanted
paupino/rust-decimal
1.3K

Decimal number implementation written in pure Rust suitable for financial and fixed-precision calculations.

Rust
#decimal#financial-calculations#number#rust
`erf`, `norm_cdf` and `norm_pdf` panic for large inputs 18 days ago
bug help wanted good for beginners
paupino/rust-decimal
1.3K

Decimal number implementation written in pure Rust suitable for financial and fixed-precision calculations.

Rust
#decimal#financial-calculations#number#rust
`dec!` miscounts long literals and ignores non-literal `radix` and `exp` arguments 20 days ago
bug help wanted
paupino/rust-decimal
1.3K

Decimal number implementation written in pure Rust suitable for financial and fixed-precision calculations.

Rust
#decimal#financial-calculations#number#rust
`sqrt` returns `None` for negative zero 21 days ago
bug help wanted good for beginners
paupino/rust-decimal
1.3K

Decimal number implementation written in pure Rust suitable for financial and fixed-precision calculations.

Rust
#decimal#financial-calculations#number#rust
serde: integers beyond the `u64` range fail to deserialize into `Decimal` 21 days ago
bug help wanted good for beginners
paupino/rust-decimal
1.3K

Decimal number implementation written in pure Rust suitable for financial and fixed-precision calculations.

Rust
#decimal#financial-calculations#number#rust
`rescale` and `trunc_with_scale` can produce a scale above 28 22 days ago
bug help wanted
paupino/rust-decimal
1.3K

Decimal number implementation written in pure Rust suitable for financial and fixed-precision calculations.

Rust
#decimal#financial-calculations#number#rust
`Display` with a precision panics for values with 4 or more integer digits 22 days ago
bug help wanted
paupino/rust-decimal
1.3K

Decimal number implementation written in pure Rust suitable for financial and fixed-precision calculations.

Rust
#decimal#financial-calculations#number#rust
`from_str_exact` rejects a trailing underscore after the 28th fractional digit 22 days ago
bug help wanted
paupino/rust-decimal
1.3K

Decimal number implementation written in pure Rust suitable for financial and fixed-precision calculations.

Rust
#decimal#financial-calculations#number#rust
Parsing a long run of zeros overflows the stack in debug builds 22 days ago
bug help wanted
paupino/rust-decimal
1.3K

Decimal number implementation written in pure Rust suitable for financial and fixed-precision calculations.

Rust
#decimal#financial-calculations#number#rust
Multiplication returns negative zero when an operand is wider than 32 bits 22 days ago
bug help wanted good for beginners
paupino/rust-decimal
1.3K

Decimal number implementation written in pure Rust suitable for financial and fixed-precision calculations.

Rust
#decimal#financial-calculations#number#rust
Remainder is wrong for divisors wider than 64 bits when the dividend is scaled up 22 days ago
bug help wanted
paupino/rust-decimal
1.3K

Decimal number implementation written in pure Rust suitable for financial and fixed-precision calculations.

Rust
#decimal#financial-calculations#number#rust
`rand` range sampling can return values outside the range 22 days ago
bug help wanted good for beginners
paupino/rust-decimal
1.3K

Decimal number implementation written in pure Rust suitable for financial and fixed-precision calculations.

Rust
#decimal#financial-calculations#number#rust
`powd` returns wrong results for negative bases, zero bases and large integer exponents 22 days ago
bug help wanted
paupino/rust-decimal
1.3K

Decimal number implementation written in pure Rust suitable for financial and fixed-precision calculations.

Rust
#decimal#financial-calculations#number#rust
`powi` with a negative exponent is inaccurate for bases below 1 and can return `None` when the result fits 22 days ago
bug help wanted
paupino/rust-decimal
1.3K

Decimal number implementation written in pure Rust suitable for financial and fixed-precision calculations.

Rust
#decimal#financial-calculations#number#rust
`maths` functions are inaccurate, and trig functions lose all precision for large arguments 22 days ago
bug help wanted
paupino/rust-decimal
1.3K

Decimal number implementation written in pure Rust suitable for financial and fixed-precision calculations.

Rust
#decimal#financial-calculations#number#rust
PostgreSQL NUMERIC values from 1e32 panic on decode 22 days ago
bug help wanted
paupino/rust-decimal
1.3K

Decimal number implementation written in pure Rust suitable for financial and fixed-precision calculations.

Rust
#decimal#financial-calculations#number#rust
`Decimal::deserialize` rounds scales 30 and 31 incorrectly 22 days ago
bug help wanted
paupino/rust-decimal
1.3K

Decimal number implementation written in pure Rust suitable for financial and fixed-precision calculations.

Rust
#decimal#financial-calculations#number#rust