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test(numerics): add test to make sure that zeros of different precision mpfp numbers are the equal.

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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
This commit is contained in:
Leonardo de Moura 2013-10-16 16:35:42 -07:00
parent 467eff4662
commit ff04c5a2e2
1 changed files with 18 additions and 0 deletions
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18
src/tests/util/numerics/mpfp.cpp
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@ -37,10 +37,28 @@ static void tst1() {
std::cout << "exp(b, UP ) = |" << exp(b, MPFR_RNDU) << "|" << std::endl; std::cout << "exp(b, UP ) = |" << exp(b, MPFR_RNDU) << "|" << std::endl;
std::cout << "exp(b, NEAR) = |" << exp(b, MPFR_RNDN) << "|" << std::endl; std::cout << "exp(b, NEAR) = |" << exp(b, MPFR_RNDN) << "|" << std::endl;
std::cout << "exp(b, DOWN) = |" << exp(b, MPFR_RNDD) << "|" << std::endl; std::cout << "exp(b, DOWN) = |" << exp(b, MPFR_RNDD) << "|" << std::endl;
mpfp d = mpfp(6.141592, 512);
std::cout << "d = |" << d << "|" << std::endl;
std::cout << "exp(d, UP ) = |" << exp(d, MPFR_RNDU) << "|" << std::endl;
std::cout << "exp(d, NEAR) = |" << exp(d, MPFR_RNDN) << "|" << std::endl;
std::cout << "exp(d, DOWN) = |" << exp(d, MPFR_RNDD) << "|" << std::endl;
} }
static void tst2() {
mpfp a(10.0, 64);
mpfp b(10.0, 128);
lean_assert(a == b);
for (unsigned i = 16; i < 256; i++) {
for (unsigned j = 16; j < 256; j++) {
lean_assert_eq(mpfp(0.0, i), mpfp(0.0, j));
}
}
}
int main() { int main() {
tst1(); tst1();
tst2();
return has_violations() ? 1 : 0; return has_violations() ? 1 : 0;
} }