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lavu/libm,configure: remove exp10, exp10f detection

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Subsequent commit introduces ff_exp10 instead.

Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>
This commit is contained in:
Ganesh Ajjanagadde
2015-12-25 08:30:06 -08:00
parent 5630ed5be6
commit 73616b1f21
2 changed files with 0 additions and 20 deletions
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2
configure vendored
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@@ -1817,8 +1817,6 @@ MATH_FUNCS="
copysign copysign
cosf cosf
erf erf
exp10
exp10f
exp2 exp2
exp2f exp2f
expf expf

18
libavutil/libm.h
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@@ -293,24 +293,6 @@ static inline double erf(double z)
#define exp2f(x) ((float)exp2(x)) #define exp2f(x) ((float)exp2(x))
#endif /* HAVE_EXP2F */ #endif /* HAVE_EXP2F */
/* Somewhat inaccurate fallbacks, relative error ~ 1e-13 concentrated on very
small and very large values. For perfection accuracy-wise, should use pow.
Speed benefits (>2x average, with no super slow paths) deemed to be worth the
accuracy tradeoff */
#if !HAVE_EXP10
static av_always_inline double exp10(double x)
{
return exp2(M_LOG2_10 * x);
}
#endif /* HAVE_EXP10 */
#if !HAVE_EXP10F
static av_always_inline float exp10f(float x)
{
return exp2f(M_LOG2_10 * x);
}
#endif /* HAVE_EXP10F */
#if !HAVE_ISINF #if !HAVE_ISINF
#undef isinf #undef isinf
/* Note: these do not follow the BSD/Apple/GNU convention of returning -1 for /* Note: these do not follow the BSD/Apple/GNU convention of returning -1 for