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.

fma(3m)

Mathematical Library Functions                                         fma(3M)



NAME
       fma, fmaf, fmal - floating-point multiply-add

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

       double fma(double x, double y, double z);


       float fmaf(float x, float y, float z);


       long double fmal(long double x, long double y, long double z);

DESCRIPTION
       These  functions compute (x * y) + z, rounded as one ternary operation.
       They compute the value (as if) to infinite precision and round once  to
       the  result format, according to the rounding mode characterized by the
       value of FLT_ROUNDS.

RETURN VALUES
       Upon successful completion, these functions return (x * y) + z, rounded
       as one ternary operation.


       If x or y are NaN, a NaN is returned.


       If x multiplied by y is an exact infinity and z is also an infinity but
       with the opposite sign, a domain error occurs and a NaN is returned.


       If one of x and y is infinite, the other is 0, and z is not  a  NaN,  a
       domain error occurs and a NaN is returned.


       If x*y is not 0*Inf nor Inf*0 and z is a NaN, a NaN is returned.

ERRORS
       These functions will fail if:

       Domain Error    The  value  of  x*y+z  is  invalid  or the value x*y is
                       invalid.

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


       Range Error     The result overflows.

                       If   the   integer   expression   (math_errhandling   &
                       MATH_ERREXCEPT)  is  non-zero,  the  overflow floating-
                       point exception will be 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.

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),  attributes(7),
       standards(7)



Solaris 11.4                     27 Sept 2016                          fma(3M)