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This commit is contained in:
Daniel Lemire 2020-11-02 21:20:06 -05:00
parent c0b5ffe54c
commit 2e1d8ba899
1 changed files with 13 additions and 0 deletions
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13
tests/exhaustive32_midpoint.cpp
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@ -57,6 +57,7 @@ void allvalues() {
memcpy(&v, &word, sizeof(v)); memcpy(&v, &word, sizeof(v));
if(std::isfinite(v)) { if(std::isfinite(v)) {
float nextf = std::nextafterf(v, INFINITY); float nextf = std::nextafterf(v, INFINITY);
if(copysign(1,v) != copysign(1,nextf)) { continue; }
if(!std::isfinite(nextf)) { continue; } if(!std::isfinite(nextf)) { continue; }
double v1{v}; double v1{v};
assert(float(v1) == v); assert(float(v1) == v);
@ -77,16 +78,28 @@ void allvalues() {
} }
if(copysign(1,result_value) != copysign(1,v)) { if(copysign(1,result_value) != copysign(1,v)) {
std::cerr << buffer << std::endl; std::cerr << buffer << std::endl;
std::cerr << "v " << std::hexfloat << v << std::endl;
std::cerr << "v2 " << std::hexfloat << v2 << std::endl;
std::cerr << "midv " << std::hexfloat << midv << std::endl;
std::cerr << "expected_midv " << std::hexfloat << expected_midv << std::endl;
std::cerr << "I got " << std::hexfloat << result_value << " but I was expecting " << v std::cerr << "I got " << std::hexfloat << result_value << " but I was expecting " << v
<< std::endl; << std::endl;
abort(); abort();
} else if (std::isnan(v)) { } else if (std::isnan(v)) {
if (!std::isnan(result_value)) { if (!std::isnan(result_value)) {
std::cerr << "not nan" << buffer << std::endl; std::cerr << "not nan" << buffer << std::endl;
std::cerr << "v " << std::hexfloat << v << std::endl;
std::cerr << "v2 " << std::hexfloat << v2 << std::endl;
std::cerr << "midv " << std::hexfloat << midv << std::endl;
std::cerr << "expected_midv " << std::hexfloat << expected_midv << std::endl;
abort(); abort();
} }
} else if (result_value != str_answer) { } else if (result_value != str_answer) {
std::cerr << "no match ? " << buffer << std::endl; std::cerr << "no match ? " << buffer << std::endl;
std::cerr << "v " << std::hexfloat << v << std::endl;
std::cerr << "v2 " << std::hexfloat << v2 << std::endl;
std::cerr << "midv " << std::hexfloat << midv << std::endl;
std::cerr << "expected_midv " << std::hexfloat << expected_midv << std::endl;
std::cout << "started with " << std::hexfloat << midv << std::endl; std::cout << "started with " << std::hexfloat << midv << std::endl;
std::cout << "round down to " << std::hexfloat << str_answer << std::endl; std::cout << "round down to " << std::hexfloat << str_answer << std::endl;
std::cout << "got back " << std::hexfloat << result_value << std::endl; std::cout << "got back " << std::hexfloat << result_value << std::endl;