template <typename INT> constexpr INT EXPONENT() const {
if (Exponent() == maxExponent) {
return INT::HUGE();
+ } else if (IsZero()) {
+ return {0};
} else {
- return {UnbiasedExponent()};
+ return {UnbiasedExponent() + 1};
}
}
// Extracts unbiased exponent value.
// Corrects the exponent value of a subnormal number.
+ // Note that the result is one less than the EXPONENT intrinsic;
+ // UnbiasedExponent(1.0) is 0, not 1.
constexpr int UnbiasedExponent() const {
int exponent{Exponent() - exponentBias};
if (IsSubnormal()) {
logical, parameter :: test_tiny10 = tiny10 == ztiny10
logical, parameter :: test_tiny16 = tiny16 == ztiny16
+ logical, parameter :: test_exponent_0 = exponent(0.0) == 0
+ logical, parameter :: test_exponent_r8 = exponent(0.125) == -2
+ logical, parameter :: test_exponent_r4 = exponent(0.25) == -1
+ logical, parameter :: test_exponent_r2 = exponent(0.5) == 0
+ logical, parameter :: test_exponent_1 = exponent(1.0) == 1
+ logical, parameter :: test_exponent_4 = exponent(4.1) == 3
+ logical, parameter :: test_exponent_12 = exponent(12.9) == 4
+
integer, parameter :: &
max2 = maxexponent(0._2), &
max3 = maxexponent(0._3), &