//! These tests are adapted from the Rust core library's unittests. #! [cfg(not(feature = "compact" ))]use minimal_lexical::lemire;use minimal_lexical::num::Float;fn compute_error32(q: i32, w: u64) -> (i32, u64) {let fp = lemire::compute_error::<f32>(q, w);fn compute_error64(q: i32, w: u64) -> (i32, u64) {let fp = lemire::compute_error::<f64>(q, w);fn compute_error_scaled32(q: i32, w: u64, lz: i32) -> (i32, u64) {let fp = lemire::compute_error_scaled::<f32>(q, w, lz);fn compute_error_scaled64(q: i32, w: u64, lz: i32) -> (i32, u64) {let fp = lemire::compute_error_scaled::<f64>(q, w, lz);fn compute_float32(q: i32, w: u64) -> (i32, u64) {let fp = lemire::compute_float::<f32>(q, w);fn compute_float64(q: i32, w: u64) -> (i32, u64) {let fp = lemire::compute_float::<f64>(q, w);#[ test]fn compute_error32_test() {// These test near-halfway cases for single-precision floats. 0 , 16777216 ), (111 + f32::INVALID_FP, 9223372036854775808 ));0 , 16777217 ), (111 + f32::INVALID_FP, 9223372586610589696 ));0 , 16777218 ), (111 + f32::INVALID_FP, 9223373136366403584 ));0 , 16777219 ), (111 + f32::INVALID_FP, 9223373686122217472 ));0 , 16777220 ), (111 + f32::INVALID_FP, 9223374235878031360 ));// These are examples of the above tests, with // digits from the exponent shifted to the mantissa. 10 , 167772160000000000 ),111 + f32::INVALID_FP, 9223372036854775808 )10 , 167772170000000000 ),111 + f32::INVALID_FP, 9223372586610589696 )10 , 167772180000000000 ),111 + f32::INVALID_FP, 9223373136366403584 )// Let's check the lines to see if anything is different in table... 10 , 167772190000000000 ),111 + f32::INVALID_FP, 9223373686122217472 )10 , 167772200000000000 ),111 + f32::INVALID_FP, 9223374235878031360 )#[ test]fn compute_error64_test() {// These test near-halfway cases for double-precision floats. 0 , 9007199254740992 ), (1065 + f64::INVALID_FP, 9223372036854775808 ));0 , 9007199254740993 ), (1065 + f64::INVALID_FP, 9223372036854776832 ));0 , 9007199254740994 ), (1065 + f64::INVALID_FP, 9223372036854777856 ));0 , 9007199254740995 ), (1065 + f64::INVALID_FP, 9223372036854778880 ));0 , 9007199254740996 ), (1065 + f64::INVALID_FP, 9223372036854779904 ));0 , 18014398509481984 ),1066 + f64::INVALID_FP, 9223372036854775808 )0 , 18014398509481986 ),1066 + f64::INVALID_FP, 9223372036854776832 )0 , 18014398509481988 ),1066 + f64::INVALID_FP, 9223372036854777856 )0 , 18014398509481990 ),1066 + f64::INVALID_FP, 9223372036854778880 )0 , 18014398509481992 ),1066 + f64::INVALID_FP, 9223372036854779904 )// Test a much closer set of examples. 0 , 9007199254740991 ),1064 + f64::INVALID_FP, 18446744073709549568 )0 , 9223372036854776831 ),1075 + f64::INVALID_FP, 9223372036854776830 )0 , 9223372036854776832 ),1075 + f64::INVALID_FP, 9223372036854776832 )0 , 9223372036854776833 ),1075 + f64::INVALID_FP, 9223372036854776832 )42 , 9123456727292927 ),925 + f64::INVALID_FP, 13021432563531497894 )43 , 91234567272929275 ),925 + f64::INVALID_FP, 13021432563531498606 )42 , 9123456727292928 ),925 + f64::INVALID_FP, 13021432563531499320 )// These are examples of the above tests, with // digits from the exponent shifted to the mantissa. 3 , 9007199254740992000 ),1065 + f64::INVALID_FP, 9223372036854775808 )3 , 9007199254740993000 ),1065 + f64::INVALID_FP, 9223372036854776832 )3 , 9007199254740994000 ),1065 + f64::INVALID_FP, 9223372036854777856 )3 , 9007199254740995000 ),1065 + f64::INVALID_FP, 9223372036854778880 )3 , 9007199254740996000 ),1065 + f64::INVALID_FP, 9223372036854779904 )// Test from errors in atof. 18 , 1000000178813934326 ),1012 + f64::INVALID_FP, 9223373686122217470 )// Check edge-cases from previous errors. 342 , 2470328229206232720 ),64 + f64::INVALID_FP, 18446744073709551608 )#[ test]fn compute_error_scaled32_test() {// These are the same examples above, just using pre-computed scaled values. // These test near-halfway cases for single-precision floats. 0 , 4611686018427387904 , 39 ),111 + f32::INVALID_FP, 9223372036854775808 )0 , 4611686293305294848 , 39 ),111 + f32::INVALID_FP, 9223372586610589696 )0 , 4611686568183201792 , 39 ),111 + f32::INVALID_FP, 9223373136366403584 )0 , 4611686843061108736 , 39 ),111 + f32::INVALID_FP, 9223373686122217472 )0 , 4611687117939015680 , 39 ),111 + f32::INVALID_FP, 9223374235878031360 )10 , 9223372036854775808 , 6 ),111 + f32::INVALID_FP, 9223372036854775808 )10 , 9223372586610589696 , 6 ),111 + f32::INVALID_FP, 9223372586610589696 )10 , 9223373136366403584 , 6 ),111 + f32::INVALID_FP, 9223373136366403584 )10 , 9223373686122217472 , 6 ),111 + f32::INVALID_FP, 9223373686122217472 )10 , 9223374235878031360 , 6 ),111 + f32::INVALID_FP, 9223374235878031360 )#[ test]fn compute_error_scaled64_test() {// These are the same examples above, just using pre-computed scaled values. // These test near-halfway cases for double-precision floats. 0 , 4611686018427387904 , 10 ),1065 + f64::INVALID_FP, 9223372036854775808 )0 , 4611686018427388416 , 10 ),1065 + f64::INVALID_FP, 9223372036854776832 )0 , 4611686018427388928 , 10 ),1065 + f64::INVALID_FP, 9223372036854777856 )0 , 4611686018427389440 , 10 ),1065 + f64::INVALID_FP, 9223372036854778880 )0 , 4611686018427389952 , 10 ),1065 + f64::INVALID_FP, 9223372036854779904 )0 , 4611686018427387904 , 9 ),1066 + f64::INVALID_FP, 9223372036854775808 )0 , 4611686018427388416 , 9 ),1066 + f64::INVALID_FP, 9223372036854776832 )0 , 4611686018427388928 , 9 ),1066 + f64::INVALID_FP, 9223372036854777856 )0 , 4611686018427389440 , 9 ),1066 + f64::INVALID_FP, 9223372036854778880 )0 , 4611686018427389952 , 9 ),1066 + f64::INVALID_FP, 9223372036854779904 )// Test a much closer set of examples. 0 , 9223372036854774784 , 11 ),1064 + f64::INVALID_FP, 18446744073709549568 )0 , 4611686018427388415 , 0 ),1075 + f64::INVALID_FP, 9223372036854776830 )0 , 4611686018427388416 , 0 ),1075 + f64::INVALID_FP, 9223372036854776832 )0 , 4611686018427388416 , 0 ),1075 + f64::INVALID_FP, 9223372036854776832 )42 , 6510716281765748947 , 10 ),925 + f64::INVALID_FP, 13021432563531497894 )43 , 6510716281765749303 , 7 ),925 + f64::INVALID_FP, 13021432563531498606 )42 , 6510716281765749660 , 10 ),925 + f64::INVALID_FP, 13021432563531499320 )// These are examples of the above tests, with // digits from the exponent shifted to the mantissa. 3 , 9223372036854775808 , 1 ),1065 + f64::INVALID_FP, 9223372036854775808 )3 , 9223372036854776832 , 1 ),1065 + f64::INVALID_FP, 9223372036854776832 )3 , 9223372036854777856 , 1 ),1065 + f64::INVALID_FP, 9223372036854777856 )3 , 9223372036854778880 , 1 ),1065 + f64::INVALID_FP, 9223372036854778880 )3 , 9223372036854779904 , 1 ),1065 + f64::INVALID_FP, 9223372036854779904 )// Test from errors in atof. 18 , 9223373686122217470 , 4 ),1012 + f64::INVALID_FP, 9223373686122217470 )// Check edge-cases from previous errors. 342 , 9223372036854775804 , 2 ),64 + f64::INVALID_FP, 18446744073709551608 )#[ test]fn compute_float_f32_rounding() {// These test near-halfway cases for single-precision floats. 0 , 16777216 ), (151 , 0 ));0 , 16777217 ), (151 , 0 ));0 , 16777218 ), (151 , 1 ));0 , 16777219 ), (151 , 2 ));0 , 16777220 ), (151 , 2 ));// These are examples of the above tests, with // digits from the exponent shifted to the mantissa. 10 , 167772160000000000 ), (151 , 0 ));10 , 167772170000000000 ), (151 , 0 ));10 , 167772180000000000 ), (151 , 1 ));// Let's check the lines to see if anything is different in table... 10 , 167772190000000000 ), (151 , 2 ));10 , 167772200000000000 ), (151 , 2 ));#[ test]fn compute_float_f64_rounding() {// Also need to check halfway cases **inside** that exponent range. // These test near-halfway cases for double-precision floats. 0 , 9007199254740992 ), (1076 , 0 ));0 , 9007199254740993 ), (1076 , 0 ));0 , 9007199254740994 ), (1076 , 1 ));0 , 9007199254740995 ), (1076 , 2 ));0 , 9007199254740996 ), (1076 , 2 ));0 , 18014398509481984 ), (1077 , 0 ));0 , 18014398509481986 ), (1077 , 0 ));0 , 18014398509481988 ), (1077 , 1 ));0 , 18014398509481990 ), (1077 , 2 ));0 , 18014398509481992 ), (1077 , 2 ));// Test a much closer set of examples. 0 , 9007199254740991 ), (1075 , 4503599627370495 ));0 , 9223372036854776831 ), (1086 , 0 ));0 , 9223372036854776832 ), (1086 , 0 ));0 , 9223372036854776833 ), (1086 , 1 ));42 , 9123456727292927 ), (936 , 1854521741541368 ));43 , 91234567272929275 ), (936 , 1854521741541369 ));42 , 9123456727292928 ), (936 , 1854521741541369 ));// These are examples of the above tests, with // digits from the exponent shifted to the mantissa. 3 , 9007199254740992000 ), (1076 , 0 ));3 , 9007199254740993000 ), (1076 , 0 ));3 , 9007199254740994000 ), (1076 , 1 ));3 , 9007199254740995000 ), (1076 , 2 ));3 , 9007199254740996000 ), (1076 , 2 ));
Messung V0.5 in Prozent C=94 H=100 G=96
¤ Dauer der Verarbeitung: 0.12 Sekunden
(vorverarbeitet am 2026-06-27)
¤ *© Formatika GbR, Deutschland
