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log

Calculate the natural logarithm of x.

Special Values
x	log(x)	divide by 0?	invalid?
±0.0	-∞	yes	no
<0.0	NaN	no	yes
+∞	+∞	no	no

@safe pure nothrow @nogc

real

log

(

real x

)

Examples

assert(feqrel(log(E), 1) >= real.mant_dig - 1);