diff options
Diffstat (limited to 'support/ToolchainSupport.h')
| -rw-r--r-- | support/ToolchainSupport.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/support/ToolchainSupport.h b/support/ToolchainSupport.h index 020a4a112b..03bbff9aba 100644 --- a/support/ToolchainSupport.h +++ b/support/ToolchainSupport.h @@ -195,6 +195,23 @@ inline T copysign(T x, T y) return ::copysign(x, y); } +/** Computes (x*y) + z as if to infinite precision and rounded only once to fit the result type. + * + * @note This function implements the same behaviour as std::fma except that it doesn't + * support Integral type. The latter is not in the namespace std in some Android toolchains. + * + * @param[in] x floating-point value + * @param[in] y floating-point value + * @param[in] z floating-point value + * + * @return Result floating point value equal to (x*y) + z.c + */ +template <typename T, typename = typename std::enable_if<std::is_floating_point<T>::value>::type> +inline T fma(T x, T y, T z) +{ + return ::fma(x, y, z); +} + /** Loads the data from the given location, converts them to character string equivalents * and writes the result to a character string buffer. * @@ -304,6 +321,23 @@ inline T copysign(T x, T y) return std::copysign(x, y); } +/** Computes (x*y) + z as if to infinite precision and rounded only once to fit the result type. + * + * @note This function implements the same behaviour as std::fma except that it doesn't + * support Integral type. The latter is not in the namespace std in some Android toolchains. + * + * @param[in] x floating-point value + * @param[in] y floating-point value + * @param[in] z floating-point value + * + * @return Result floating point value equal to (x*y) + z. + */ +template <typename T, typename = typename std::enable_if<std::is_floating_point<T>::value>::type> +inline T fma(T x, T y, T z) +{ + return std::fma(x, y, z); +} + /** Loads the data from the given location, converts them to character string equivalents * and writes the result to a character string buffer. * |