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Merged
sfisol merged 1 commit into from
Nov 6, 2025
Merged

Public lookup tables #4

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3 changes: 3 additions & 0 deletions src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,9 @@ pub use distance::RaceDistance;

mod lookup_tables;

mod lookup_funcs;
pub use lookup_funcs::*;

mod odds;
pub use odds::*;

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47 changes: 47 additions & 0 deletions src/lookup_funcs.rs
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Original file line number Diff line number Diff line change
@@ -0,0 +1,47 @@
use rust_decimal::Decimal;

use crate::{
ConversionConfig, LookupVariant,
lookup_tables::{
get_american_to_fraction_extended_map, get_american_to_fraction_map,
get_decimal_to_fraction_extended_map, get_decimal_to_fraction_map,
},
};

/// Manually Lookup decimal to fractional table using provided config
pub fn lookup_decimal_to_fraction_with_config(
odds: Decimal,
config: ConversionConfig,
) -> Option<(u32, u32)> {
let frac = get_decimal_to_fraction_map().get(&odds);

if frac.is_none() && config.lookup_tables_variant == LookupVariant::Extended {
return get_decimal_to_fraction_extended_map().get(&odds).copied();
}

frac.copied()
}

/// Manually Lookup decimal to fractional table using default config (no extended tables used)
pub fn lookup_decimal_to_fraction(odds: Decimal) -> Option<(u32, u32)> {
lookup_decimal_to_fraction_with_config(odds, ConversionConfig::default())
}

/// Manually Lookup american to fractional table using provided config
pub fn lookup_american_to_fraction_with_config(
odds: i32,
config: ConversionConfig,
) -> Option<(u32, u32)> {
let frac = get_american_to_fraction_map().get(&odds);

if frac.is_none() && config.lookup_tables_variant == LookupVariant::Extended {
return get_american_to_fraction_extended_map().get(&odds).copied();
}

frac.copied()
}

/// Manually Lookup american to fractional table using default config (no extended tables used)
pub fn lookup_american_to_fraction(odds: i32) -> Option<(u32, u32)> {
lookup_american_to_fraction_with_config(odds, ConversionConfig::default())
}
198 changes: 198 additions & 0 deletions src/lookup_tables.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -92,36 +92,234 @@ static DECIMAL_TO_FRACTION_EXTENDED: OnceLock<HashMap<Decimal, (u32, u32)>> = On
pub fn get_decimal_to_fraction_extended_map() -> &'static HashMap<Decimal, (u32, u32)> {
DECIMAL_TO_FRACTION_EXTENDED.get_or_init(|| {
let mut m = HashMap::new();
m.insert(dec!(1.0010), (1, 1000));
m.insert(dec!(1.0013), (1, 750));
m.insert(dec!(1.0020), (1, 500));
m.insert(dec!(1.0025), (1, 400));
m.insert(dec!(1.0030), (1, 300));
m.insert(dec!(1.0040), (1, 250));
m.insert(dec!(1.0050), (1, 200));
m.insert(dec!(1.0070), (1, 150));
m.insert(dec!(1.0120), (1, 80));
m.insert(dec!(1.0150), (1, 66));
m.insert(dec!(1.0200), (1, 50));
m.insert(dec!(1.0250), (1, 40));
m.insert(dec!(1.0300), (1, 33));
m.insert(dec!(1.0400), (1, 25));
m.insert(dec!(1.0500), (1, 20));
m.insert(dec!(1.0550), (1, 18));
m.insert(dec!(1.0600), (1, 16));
m.insert(dec!(1.0700), (1, 14));
m.insert(dec!(1.0800), (1, 12));
m.insert(dec!(1.0900), (1, 11));
m.insert(dec!(1.1000), (1, 10));
m.insert(dec!(1.1100), (1, 9));
m.insert(dec!(1.1200), (1, 8));
m.insert(dec!(1.1300), (2, 15));
m.insert(dec!(1.1400), (1, 7));
m.insert(dec!(1.1500), (2, 13));
m.insert(dec!(1.1600), (1, 6));
m.insert(dec!(1.1800), (2, 11)); // D
m.insert(dec!(1.1900), (19, 100)); // D
m.insert(dec!(1.2100), (21, 100)); // D
m.insert(dec!(1.2300), (23, 100)); // D
m.insert(dec!(1.2400), (6, 25)); // D
m.insert(dec!(1.2600), (13, 50)); // D
m.insert(dec!(1.2700), (27, 100)); // D
m.insert(dec!(1.3100), (31, 100)); // D
m.insert(dec!(1.3200), (8, 25)); // D
m.insert(dec!(1.3400), (17, 50)); // D
m.insert(dec!(1.3500), (7, 20)); // D
m.insert(dec!(1.3700), (37, 100)); // D
m.insert(dec!(1.3800), (19, 50)); // D
m.insert(dec!(1.3900), (39, 100)); // D
m.insert(dec!(1.4100), (41, 100)); // D
m.insert(dec!(1.4200), (21, 50)); // D
m.insert(dec!(1.4300), (43, 100)); // D
m.insert(dec!(1.4500), (9, 20)); // D
m.insert(dec!(1.4600), (23, 50)); // D
m.insert(dec!(1.4700), (40, 85));
m.insert(dec!(1.4800), (12, 25)); // D
m.insert(dec!(1.4900), (49, 100)); // D
m.insert(dec!(1.5100), (51, 100)); // D
m.insert(dec!(1.5200), (13, 25)); // D
m.insert(dec!(1.5400), (27, 50)); // D
m.insert(dec!(1.5500), (11, 20)); // D
m.insert(dec!(1.5600), (14, 25)); // D
m.insert(dec!(1.5800), (29, 50)); // D
m.insert(dec!(1.5900), (59, 100)); // D
m.insert(dec!(1.6000), (3, 5)); // D
m.insert(dec!(1.6100), (8, 13));
m.insert(dec!(1.6300), (63, 100)); // D
m.insert(dec!(1.6400), (16, 25)); // D
m.insert(dec!(1.6500), (13, 20)); // D
m.insert(dec!(1.6600), (4, 6));
m.insert(dec!(1.6800), (34, 50)); // D
m.insert(dec!(1.6900), (69, 100));
m.insert(dec!(1.7000), (7, 10)); // D
m.insert(dec!(1.7100), (71, 100)); // D
m.insert(dec!(1.7200), (8, 11));
m.insert(dec!(1.7400), (37, 50)); // D
m.insert(dec!(1.7500), (3, 4));
m.insert(dec!(1.7600), (19, 25)); // D
m.insert(dec!(1.7700), (77, 100)); // D
m.insert(dec!(1.7800), (39, 50)); // D
m.insert(dec!(1.7900), (79, 100)); // D
m.insert(dec!(1.8100), (81, 100)); // D
m.insert(dec!(1.8200), (41, 50)); // D
m.insert(dec!(1.8400), (21, 25)); // D
m.insert(dec!(1.8500), (17, 20)); // D
m.insert(dec!(1.8600), (20, 23)); // D
m.insert(dec!(1.8700), (87, 100)); // D
m.insert(dec!(1.8800), (22, 25)); // D
m.insert(dec!(1.8900), (89, 100)); // D
m.insert(dec!(1.9000), (9, 10));
m.insert(dec!(1.9200), (23, 25)); // D
m.insert(dec!(1.9300), (93, 100)); // D
m.insert(dec!(1.9400), (47, 50)); // D
m.insert(dec!(1.9500), (20, 21));
m.insert(dec!(1.9600), (24, 25)); // D
m.insert(dec!(1.9700), (97, 100)); // D
m.insert(dec!(1.9800), (49, 50)); // D
m.insert(dec!(1.9900), (99, 100)); // D
m.insert(dec!(2.0100), (101, 100)); // D
m.insert(dec!(2.0200), (51, 50)); // D
m.insert(dec!(2.0300), (103, 100)); // D
m.insert(dec!(2.0400), (26, 25)); // D
m.insert(dec!(2.0600), (53, 50)); // D
m.insert(dec!(2.0700), (107, 100)); // D
m.insert(dec!(2.0800), (27, 25)); // D
m.insert(dec!(2.0900), (109, 100)); // D
m.insert(dec!(2.1100), (111, 100)); // D
m.insert(dec!(2.1200), (28, 25)); // D
m.insert(dec!(2.1300), (113, 100)); // D
m.insert(dec!(2.1400), (57, 50)); // D
m.insert(dec!(2.1600), (29, 25)); // D
m.insert(dec!(2.1700), (117, 100)); // D
m.insert(dec!(2.1800), (59, 50)); // D
m.insert(dec!(2.1900), (119, 100)); // D
m.insert(dec!(2.2100), (121, 100)); // D
m.insert(dec!(2.2200), (61, 50)); // D
m.insert(dec!(2.2300), (123, 100)); // D
m.insert(dec!(2.2400), (31, 25)); // D
m.insert(dec!(2.2600), (63, 50)); // D
m.insert(dec!(2.2700), (127, 100)); // D
m.insert(dec!(2.2800), (32, 25)); // D
m.insert(dec!(2.3000), (13, 10));
m.insert(dec!(2.3200), (33, 25)); // D
m.insert(dec!(2.3400), (67, 50)); // D
m.insert(dec!(2.3500), (27, 20)); // D
m.insert(dec!(2.3600), (34, 25)); // D
m.insert(dec!(2.3700), (11, 8));
m.insert(dec!(2.4200), (71, 50)); // D
m.insert(dec!(2.4400), (36, 25)); // D
m.insert(dec!(2.4500), (29, 20));
m.insert(dec!(2.4600), (73, 50)); // D
m.insert(dec!(2.4800), (37, 25)); // D
m.insert(dec!(2.5200), (38, 25)); // D
m.insert(dec!(2.5400), (77, 50)); // D
m.insert(dec!(2.5600), (39, 25)); // D
m.insert(dec!(2.5800), (79, 50)); // D
m.insert(dec!(2.6400), (41, 25)); // D
m.insert(dec!(2.6600), (83, 50)); // D
m.insert(dec!(2.6800), (42, 25)); // D
m.insert(dec!(2.7000), (17, 10));
m.insert(dec!(2.7200), (43, 25)); // D
m.insert(dec!(2.7400), (87, 50)); // D
m.insert(dec!(2.7600), (44, 25)); // D
m.insert(dec!(2.7800), (89, 50)); // D
m.insert(dec!(2.8200), (91, 50)); // D
m.insert(dec!(2.8400), (46, 25)); // D
m.insert(dec!(2.8600), (93, 50)); // D
m.insert(dec!(2.8700), (15, 8)); // D
m.insert(dec!(2.9000), (19, 10));
m.insert(dec!(2.9200), (48, 25)); // D
m.insert(dec!(2.9400), (97, 50));
m.insert(dec!(2.9600), (49, 25)); // D
m.insert(dec!(2.9800), (99, 50)); // D
m.insert(dec!(3.0500), (41, 20)); // D
m.insert(dec!(3.1000), (21, 10));
m.insert(dec!(3.1250), (85, 40));
m.insert(dec!(3.1500), (43, 20)); // D
m.insert(dec!(3.3000), (23, 10));
m.insert(dec!(3.3500), (47, 20)); // D
m.insert(dec!(3.4500), (49, 20)); // D
m.insert(dec!(3.5500), (51, 20)); // D
m.insert(dec!(3.6500), (53, 20)); // D
m.insert(dec!(3.7000), (27, 10)); // D
m.insert(dec!(3.8000), (14, 5));
m.insert(dec!(3.8500), (57, 20)); // D
m.insert(dec!(3.9500), (59, 20)); // D
m.insert(dec!(4.0500), (61, 20)); // D
m.insert(dec!(4.1000), (31, 10));
m.insert(dec!(4.1500), (63, 20)); // D
m.insert(dec!(4.2500), (13, 4)); // D
m.insert(dec!(4.3000), (33, 10)); // D
m.insert(dec!(4.3500), (67, 20)); // D
m.insert(dec!(4.4000), (17, 5));
m.insert(dec!(4.4500), (69, 20)); // D
m.insert(dec!(4.5500), (71, 20)); // D
m.insert(dec!(4.6000), (18, 5));
m.insert(dec!(4.6500), (73, 20)); // D
m.insert(dec!(4.7000), (37, 10)); // D
m.insert(dec!(4.7500), (15, 4));
m.insert(dec!(4.8000), (19, 5));
m.insert(dec!(4.8500), (77, 20)); // D
m.insert(dec!(4.9000), (39, 10)); // D
m.insert(dec!(4.9500), (79, 20)); // D
m.insert(dec!(5.1000), (41, 10)); // D
m.insert(dec!(5.2000), (21, 5)); // D
m.insert(dec!(5.3000), (43, 10)); // D
m.insert(dec!(5.4000), (22, 5)); // D
m.insert(dec!(5.6000), (23, 5)); // D
m.insert(dec!(5.7000), (47, 10)); // D
m.insert(dec!(5.8000), (24, 5)); // D
m.insert(dec!(5.9000), (49, 10)); // D
m.insert(dec!(6.2000), (26, 5)); // D
m.insert(dec!(6.4000), (27, 5)); // D
m.insert(dec!(6.6000), (28, 5)); // D
m.insert(dec!(6.8000), (29, 5)); // D
m.insert(dec!(7.2000), (31, 5)); // D
m.insert(dec!(7.4000), (32, 5)); // D
m.insert(dec!(7.6000), (33, 5)); // D
m.insert(dec!(7.8000), (34, 5)); // D
m.insert(dec!(8.2000), (36, 5)); // D
m.insert(dec!(8.4000), (37, 5)); // D
m.insert(dec!(8.6000), (38, 5)); // D
m.insert(dec!(8.8000), (39, 5)); // D
m.insert(dec!(9.2000), (41, 5)); // D
m.insert(dec!(9.4000), (42, 5)); // D
m.insert(dec!(9.5000), (17, 2));
m.insert(dec!(9.6000), (43, 5)); // D
m.insert(dec!(9.8000), (44, 5)); // D
m.insert(dec!(23.0000), (22, 1));
m.insert(dec!(29.0000), (28, 1));
m.insert(dec!(31.0000), (30, 1));
m.insert(dec!(36.0000), (35, 1));
m.insert(dec!(41.0000), (40, 1));
m.insert(dec!(46.0000), (45, 1));
m.insert(dec!(56.0000), (55, 1));
m.insert(dec!(61.0000), (60, 1));
m.insert(dec!(71.0000), (70, 1));
m.insert(dec!(76.0000), (75, 1)); // D
m.insert(dec!(81.0000), (80, 1));
m.insert(dec!(86.0000), (85, 1)); // D
m.insert(dec!(91.0000), (90, 1));
m.insert(dec!(96.0000), (95, 1)); // D
m.insert(dec!(111.0000), (110, 1));
m.insert(dec!(121.0000), (120, 1));
m.insert(dec!(126.0000), (125, 1));
m.insert(dec!(131.0000), (130, 1));
m.insert(dec!(141.0000), (140, 1));
m.insert(dec!(151.0000), (150, 1));
m.insert(dec!(176.0000), (175, 1));
m.insert(dec!(201.0000), (200, 1));
m.insert(dec!(226.0000), (225, 1));
m.insert(dec!(251.0000), (250, 1));
m.insert(dec!(276.0000), (275, 1));
m.insert(dec!(301.0000), (300, 1));
m.insert(dec!(401.0000), (400, 1));
m.insert(dec!(501.0000), (500, 1));
m
})
}
Expand Down