.. title:: clang-tidy - performance-type-promotion-in-math-fn | |
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). | |
.. code-block:: c++ | |
float a; | |
asin(a); | |
// becomes | |
float a; | |
std::asin(a); |