_logb.c File Reference

#include "libm.h"

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Functions
_Check_return_ double __cdecl	_logb (_In_ double x)

Function Documentation

_logb()

_Check_return_ double __cdecl _logb

(

_In_ double

x

)

Definition at line 13 of file _logb.c.

{
    /* Infinities come back unchanged, logb would make -inf positive */
    if ((asuint64(x) & 0x7FFFFFFFFFFFFFFFULL) == 0x7FF0000000000000ULL)
        return x;
 
    return logb(x);
}