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feat: add isInfinity and isInteger methods to Num class

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Implements two new methods on the Num class: isInfinity checks if a number is positive or negative infinity using isinf(), and isInteger checks if a number has no fractional component, returning false for NaN and infinity. Includes C primitives, documentation, and test files.
This commit is contained in:
Bob Nystrom
2015-09-30 15:41:43 +00:00
parent b3086333f0
commit af90291f6f
4 changed files with 44 additions and 0 deletions
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src/vm/wren_core.c
+14
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@@ -665,6 +665,18 @@ DEF_PRIMITIVE(num_fraction)
RETURN_NUM(modf(AS_NUM(args[0]) , &dummy));
}
DEF_PRIMITIVE(num_isInfinity)
{
RETURN_BOOL(isinf(AS_NUM(args[0])));
}
DEF_PRIMITIVE(num_isInteger)
{
double value = AS_NUM(args[0]);
if (isnan(value) || isinf(value)) RETURN_FALSE;
RETURN_BOOL(trunc(value) == value);
}
DEF_PRIMITIVE(num_isNan)
{
RETURN_BOOL(isnan(AS_NUM(args[0])));
@@ -1194,6 +1206,8 @@ void wrenInitializeCore(WrenVM* vm)
PRIMITIVE(vm->numClass, "...(_)", num_dotDotDot);
PRIMITIVE(vm->numClass, "atan(_)", num_atan2);
PRIMITIVE(vm->numClass, "fraction", num_fraction);
PRIMITIVE(vm->numClass, "isInfinity", num_isInfinity);
PRIMITIVE(vm->numClass, "isInteger", num_isInteger);
PRIMITIVE(vm->numClass, "isNan", num_isNan);
PRIMITIVE(vm->numClass, "sign", num_sign);
PRIMITIVE(vm->numClass, "toString", num_toString);