/**
* Madara function that determines if an argument is false
**/
madara::knowledge::KnowledgeRecord
is_false (madara::knowledge::FunctionArguments & args,
madara::knowledge::Variables & variables)
{
// if we've been provided with an argument, check if it is true
if (args.size () == 1)
return madara::knowledge::KnowledgeRecord::Integer (
args[0].to_double () < 0.5 && args[0].to_double () >= 0);
// if the user didn't provide an argument, return false
else
return madara::knowledge::KnowledgeRecord::Integer (0);
}
/**
* Madara function that returns a random number. No argument means to generate
* a random number up to the limits of the stdlib.h implementation's limits. An
* integer argument means to generate a random up to the specified arg limit.
**/
madara::knowledge::KnowledgeRecord
rand_int (madara::knowledge::FunctionArguments & args,
madara::knowledge::Variables & variables)
{
// if the args list is greater than zero, is an integer, and is not 0
if (args.size () > 0 &&
args[0].type () == madara::knowledge::KnowledgeRecord::INTEGER &&
args[0].to_integer () != 0)
{
// then call rand () with a modulus up to that integer argument
return madara::knowledge::KnowledgeRecord::Integer (
rand () % (int)args[0].to_integer ());
}
// otherwise, just return rand ()
else
return madara::knowledge::KnowledgeRecord::Integer (rand ());
}
Record
to_legible_hertz(engine::FunctionArguments & args, engine::Variables & /*vars*/)
{
Record result;
if (args.size() == 1)
{
std::stringstream buffer;
std::locale loc("C");
buffer.imbue(loc);
const int ghz_mark = 1000000000;
const int mhz_mark = 1000000;
const int khz_mark = 1000;
double hertz = args[0].to_double();
double freq = hertz / ghz_mark;
if (freq >= 1)
{
buffer << std::setprecision(2) << std::fixed;
buffer << freq;
buffer << " ghz";
result = Record(buffer.str().c_str());
}
else
{
freq = hertz / mhz_mark;
if (freq >= 1)
{
buffer << std::setprecision(2) << std::fixed;
buffer << freq;
buffer << " mhz";
result = Record(buffer.str().c_str());
}
else
{
freq = hertz / khz_mark;
if (freq >= 1)
{
buffer << std::setprecision(2) << std::fixed;
buffer << freq;
buffer << " khz";
result = Record(buffer.str().c_str());
}
else
{
freq = hertz;
buffer << std::setprecision(2) << std::fixed;
buffer << freq;
buffer << " hz";
result = Record(buffer.str().c_str());
}
}
}
}
return result;
}