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New test cases for decimal and ieee754.

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FossilOrigin-Name: 73d62f82f94347c60e026bc9cb859fec2d8b5f0c756df0c4941f11817234bff8
This commit is contained in:
drh
2020-07-15 02:15:03 +00:00
parent 9951522f0b
commit d8b3c19991
3 changed files with 52 additions and 9 deletions
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46
test/decimal.test
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@ -15,7 +15,7 @@ source $testdir/tester.tcl
set testprefix decimal
if {[catch {load_static_extension db decimal} error]} {
puts "Skipping zipfile tests, hit load error: $error"
puts "Skipping decimal tests, hit load error: $error"
finish_test; return
}
@ -138,5 +138,49 @@ do_execsql_test 5103 {
SELECT decimal_mul('1234.0000','2');
} {2468}
if {[catch {load_static_extension db ieee754} error]} {
puts "Skipping ieee754 tests, hit load error: $error"
finish_test; return
}
do_execsql_test 6000 {
CREATE TABLE pow2(x INTEGER PRIMARY KEY, v TEXT);
WITH RECURSIVE c(x,v) AS (
VALUES(0,'1')
UNION ALL
SELECT x+1, decimal_mul(v,'2') FROM c WHERE x+1<=971
) INSERT INTO pow2(x,v) SELECT x, v FROM c;
WITH RECURSIVE c(x,v) AS (
VALUES(-1,'0.5')
UNION ALL
SELECT x-1, decimal_mul(v,'0.5') FROM c WHERE x-1>=-1075
) INSERT INTO pow2(x,v) SELECT x, v FROM c;
} {}
do_execsql_test 6010 {
WITH c(n) AS (SELECT ieee754_from_blob(x'0000000000000001'))
SELECT decimal_mul(ieee754_mantissa(c.n),pow2.v)
FROM pow2, c WHERE pow2.x=ieee754_exponent(c.n);
} {0.000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004940656458412465441765687928682213723650598026143247644255856825006755072702087518652998363616359923797965646954457177309266567103559397963987747960107818781263007131903114045278458171678489821036887186360569987307230500063874091535649843873124733972731696151400317153853980741262385655911710266585566867681870395603106249319452715914924553293054565444011274801297099995419319894090804165633245247571478690147267801593552386115501348035264934720193790268107107491703332226844753335720832431936092382893458368060106011506169809753078342277318329247904982524730776375927247874656084778203734469699533647017972677717585125660551199131504891101451037862738167250955837389733598993664809941164205702637090279242767544565229087538682506419718265533447265625}
do_execsql_test 6020 {
WITH c(n) AS (SELECT ieee754_from_blob(x'7fefffffffffffff'))
SELECT decimal_mul(ieee754_mantissa(c.n),pow2.v)
FROM pow2, c WHERE pow2.x=ieee754_exponent(c.n);
} {179769313486231570814527423731704356798070567525844996598917476803157260780028538760589558632766878171540458953514382464234321326889464182768467546703537516986049910576551282076245490090389328944075868508455133942304583236903222948165808559332123348274797826204144723168738177180919299881250404026184124858368}
do_execsql_test 6100 {
SELECT ieee754(ieee754_from_blob(x'0000000000000001'));
} {ieee754(1,-1074)}
do_execsql_test 6110 {
SELECT ieee754(ieee754_from_blob(x'7fefffffffffffff'));
} {ieee754(9007199254740991,971)}
do_execsql_test 6120 {
SELECT printf('%.8e',ieee754_from_blob(x'0000000000000001'));
} {4.94065646e-324}
do_execsql_test 6130 {
SELECT printf('%.8e',ieee754_from_blob(x'ffefffffffffffff'));
} {-1.79769313e+308}
finish_test