Hyperbolic cosine. This function is exact to rounding for all rounding modes. See also:** Documentation for [std::cosh](https://en.cppreference.com/w/cpp/numeric/math/cosh). \param arg function argument \return hyperbolic cosine value of \a arg \exception FE_INVALID for signaling NaN \exception FE_OVERFLOW, ...UNDERFLOW, ...INEXACT according to rounding
| 3819 | /// \exception FE_INVALID for signaling NaN |
| 3820 | /// \exception FE_OVERFLOW, ...UNDERFLOW, ...INEXACT according to rounding |
| 3821 | inline half cosh(half arg) |
| 3822 | { |
| 3823 | #ifdef HALF_ARITHMETIC_TYPE |
| 3824 | return half(detail::binary, detail::float2half<half::round_style>(std::cosh(detail::half2float<detail::internal_t>(arg.data_)))); |
| 3825 | #else |
| 3826 | int abs = arg.data_ & 0x7FFF, exp; |
| 3827 | if(!abs) |
| 3828 | return half(detail::binary, 0x3C00); |
| 3829 | if(abs >= 0x7C00) |
| 3830 | return half(detail::binary, (abs>0x7C00) ? detail::signal(arg.data_) : 0x7C00); |
| 3831 | std::pair<detail::uint32,detail::uint32> mm = detail::hyperbolic_args(abs, exp, (half::round_style==std::round_to_nearest) ? 23 : 26); |
| 3832 | detail::uint32 m = mm.first + mm.second, i = (~m&0xFFFFFFFF) >> 31; |
| 3833 | m = (m>>i) | (m&i) | 0x80000000; |
| 3834 | if((exp+=13+i) > 29) |
| 3835 | return half(detail::binary, detail::overflow<half::round_style>()); |
| 3836 | return half(detail::binary, detail::fixed2half<half::round_style,31,false,false,true>(m, exp)); |
| 3837 | #endif |
| 3838 | } |
| 3839 | |
| 3840 | /// Hyperbolic tangent. |
| 3841 | /// This function is exact to rounding for all rounding modes. |
nothing calls this directly
no test coverage detected