performance-type-promotion-in-math-fn¶
Finds calls to C math library functions (from math.h
or, in C++, cmath
)
with implicit float
to double
promotions.
For example, warns on ::sin(0.f)
, because this funciton’s parameter is a
double. You probably meant to call std::sin(0.f)
(in C++), or sinf(0.f)
(in C).
float a;
asin(a);
// becomes
float a;
std::asin(a);