개요

• 솔라나라에 설명된 어플리케이션에 대해 맨 페이지를 찾아 출력한다.
• MAN 페이지에 대한 설명은 윈디하나의 솔라나라: MAN 페이지을 참고하자.
• svcadm(8)을 검색하려면 섹션에서 8 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.

log10(3m)

Mathematical Library Functions                                       log10(3M)



NAME
       log10, log10f, log10l - base 10 logarithm function

SYNOPSIS
       c99 [ flag... ] file... -lm [ library... ]
       #include <math.h>

       double log10(double x);


       float log10f(float x);


       long double log10l(long double x);

DESCRIPTION
       These functions compute the base 10 logarithm of x, log(10)(x).

RETURN VALUES
       Upon successful completion, log10() returns the base 10 logarithm of x.


       If  x  is  ±0,  a pole error occurs and log10(), log10f(), and log10l()
       return −HUGE_VAL, −HUGE_VALF, and −HUGE_VALL, respectively.


       For finite values of x that are less than 0, or if x is −Inf, a  domain
       error occurs and a NaN is returned.


       If x is NaN, a NaN is returned.


       If x is 1, +0 is returned.


       If x is +Inf, x is returned.


       For  exceptional cases, matherr(3M) tabulates the values to be returned
       by log10() as specified by SVID3 and XPG3.

ERRORS
       These functions will fail if:

       Domain Error    The finite value of x is negative, or x is -Inf.

                       If   the   integer   expression   (math_errhandling   &
                       MATH_ERREXCEPT) is non-zero, the invalid floating-point
                       exception is raised.

                       The log10() function sets errno to EDOM if the value of
                       x is negative.


       Pole Error      The value of x is 0.

                       If   the   integer   expression   (math_errhandling   &
                       MATH_ERREXCEPT) is non-zero, the divide-by-zero  float‐
                       ing-point exception is raised.


USAGE
       An  application  wanting to check for exceptions should call feclearex‐
       cept(FE_ALL_EXCEPT) before  calling  these  functions.  On  return,  if
       fetestexcept(FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW) is
       non-zero, an exception has been raised. An  application  should  either
       examine the return value or check the floating point exception flags to
       detect exceptions.


       An application can also set errno  to  0  before  calling  log10().  On
       return,  if  errno is non-zero, an error has occurred. The log10f() and
       log10l() functions do not set errno.

ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:


       tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i)


       ATTRIBUTE TYPEATTRIBUTE VALUE _ Interface StabilityCommitted  _  Avail‐
       abilitysystem/library/math   _   MT-LevelMT-Safe  _  StandardSee  stan‐
       dards(7).


SEE ALSO
       math.h(3HEAD), feclearexcept(3M), fetestexcept(3M), isnan(3M), log(3M),
       matherr(3M), pow(3M), attributes(7), standards(7)



Solaris 11.4                     27 Sept 2016                        log10(3M)