add max abs

bin/examples/math/main.cpp

@@ -11,6 +11,8 @@ auto main(int argc, char *argv[]) -> int
   hack::log()(hack::math::min(4, 5));
   hack::log()(hack::math::min(c, b));
 
+  int a1 = -4, b1 = -5; 
+  hack::log()(hack::math::max_abs(a1, b1));
   return 0;
 }
 

bin/meson.build

@@ -2,10 +2,10 @@ executable(
   meson.project_name(), 
   # 'examples/audio/main.cpp', 
   # 'examples/concepts/main.cpp', 
-  # 'examples/math/main.cpp', 
+  'examples/math/main.cpp', 
   # 'examples/range/main.cpp', 
   # 'examples/patterns/main.cpp', 
-  'examples/logger/main.cpp', 
+  # 'examples/logger/main.cpp', 
   # 'examples/exception/main.cpp', 
   # 'examples/comparators/main.cpp', 
   dependencies : deps,

src/hack/math/math.hpp

@@ -1,6 +1,7 @@
 #pragma once
 
 #include <type_traits>
+#include <math.h>
 
 namespace hack::math
 {
@@ -18,4 +19,16 @@ namespace hack::math
   {
     return a < b ? a : b;
   }
+
+  template<typename T, typename U, typename RT = std::common_type_t<T, U>>
+  inline RT max_abs(T a, U b)
+  {
+    return std::abs(a) > std::abs(b) ? a : b;
+  }
+
+  template<typename T, typename U, typename RT = std::common_type_t<T, U>>
+  inline RT min_abs(T a, U b)
+  {
+    return std::abs(a) < std::abs(b) ? a : b;
+  }
 }