cmath.h

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#ifndef STD_CMATH_H_
#define STD_CMATH_H_
 
 
namespace std {
template<typename T>
inline double fabs(T x) {
    return ::fabs(x);
}
 
inline float fabs(float num) {
    return ::fabsf(num);
}
 
inline float fabsf(float num) {
    return ::fabsf(num);
}
 
inline float sqrt(float x) {
    return ::sqrtf(x);
}
 
inline float abs(float x) {
    return ::fabsf(x);
}
}  // namespace std
 
#endif