diff options
Diffstat (limited to 'libavutil/internal.h')
| -rw-r--r-- | libavutil/internal.h | 36 |
1 files changed, 0 insertions, 36 deletions
diff --git a/libavutil/internal.h b/libavutil/internal.h index 340e18bc5d..61784b5128 100644 --- a/libavutil/internal.h +++ b/libavutil/internal.h @@ -295,42 +295,6 @@ static av_always_inline av_const int64_t ff_rint64_clip(double a, int64_t amin, } /** - * Compute 10^x for floating point values. Note: this function is by no means - * "correctly rounded", and is meant as a fast, reasonably accurate approximation. - * For instance, maximum relative error for the double precision variant is - * ~ 1e-13 for very small and very large values. - * This is ~2x faster than GNU libm's approach, which is still off by 2ulp on - * some inputs. - * @param x exponent - * @return 10^x - */ -static av_always_inline double ff_exp10(double x) -{ - return exp2(M_LOG2_10 * x); -} - -static av_always_inline float ff_exp10f(float x) -{ - return exp2f(M_LOG2_10 * x); -} - -/** - * Compute x^y for floating point x, y. Note: this function is faster than the - * libm variant due to mainly 2 reasons: - * 1. It does not handle any edge cases. In particular, this is only guaranteed - * to work correctly for x > 0. - * 2. It is not as accurate as a standard nearly "correctly rounded" libm variant. - * @param x base - * @param y exponent - * @return x^y - */ -static av_always_inline float ff_fast_powf(float x, float y) -{ - return expf(logf(x) * y); -} - - -/** * A wrapper for open() setting O_CLOEXEC. */ av_warn_unused_result |