`eval'
------

eval(OBJ[,PREC])
     :: OBJ ̒l̕].

RETURN
     邢͎
OBJ
     ʂ̎
PREC
     

   * OBJ Ɋ܂܂锟̒l\Ȍ].
   * vZ PARI (*Note pari::) s.
   * PREC w肵ꍇ, vZ, 10 i PREC xōs. PREC 
     w肪Ȃꍇ, ݐݒ肳Ă鐸xōs. (*Note
     setprec::)
   * 锟, ̒ʂ.
          `sin', `cos', `tan',

          `asin', `acos', `atan',

          `sinh', `cosh', `tanh',

          `asinh', `acosh', `atanh',

          `exp', `log', `pow(a,b) (a^b)'
   * ȉ̋L𐔂Ƃĕ]ł.
     @i
          P
     @pi
          ~
     @e
          Rΐ̒

     [118] eval(exp(@pi*@i));   
     -1.0000000000000000000000000000
     [119] eval(2^(1/2));
     1.414213562373095048763788073031
     [120] eval(sin(@pi/3));
     0.86602540378443864674620506632
     [121] eval(sin(@pi/3)-3^(1/2)/2,50);
     -2.78791084448179148471 E-58

Q
     `ctrl', `setprec', `pari'

