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glibc  2.9
Functions
w_log.c File Reference
#include <math.h>
#include "math_private.h"
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Functions

double __log (double x)

Function Documentation

double __log ( double  x)

Definition at line 28 of file w_log.c.

{
#ifdef _IEEE_LIBM
       return __ieee754_log(x);
#else
       double z;
       z = __ieee754_log(x);
       if(_LIB_VERSION == _IEEE_ || __isnan(x) || x > 0.0) return z;
       if(x==0.0)
           return __kernel_standard(x,x,16); /* log(0) */
       else
           return __kernel_standard(x,x,17); /* log(x<0) */
#endif
}

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