Closed
Description
Consider the following C++ example. The functions log2(x), log10(x) and log(x) are folded, but log1p(x), logb(x), ilogb(x) are not.
https://godbolt.org/z/nzrncEE37
#include <cmath>
double f1() {
double num = 8.0;
return std::log2(num);
}
double f2() {
double num = 100.0;
return std::log10(num);
}
double f3() {
double num = 2.718281828459045;
return std::log(num);
}
double f4() {
double num = 2.718281828459045;
return std::log1p(num - 1);
}
double f5() {
double num = 48.0;
return std::logb(num);
}
int f6() {
double num = 48.0;
return std::ilogb(num);
}