Standard C Math
  
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      | abs | absolute value | 
    
      | acos | arc cosine | 
    
      | asin | arc sine | 
    
      | atan | arc tangent | 
    
      | atan2 | arc tangent, using signs to
      determine quadrants | 
    
      | ceil | the smallest integer not less than
      a certain value | 
    
      | cos | cosine | 
    
      | cosh | hyperbolic cosine | 
    
      | div | returns the quotient and remainder
      of a division | 
    
      | exp | returns "e" raised to a
      given power | 
    
      | fabs | absolute value for floating-point
      numbers | 
    
      | floor | returns the largest integer not
      greater than a given value | 
    
      | fmod | returns the remainder of a
      division | 
    
      | frexp | decomposes a number into scientific
      notation | 
    
      | labs | absolute value for long
      integers | 
    
      | ldexp | computes a number in scientific
      notation | 
    
      | ldiv | returns the quotient and remainder
      of a division, in long integer form | 
    
      | log | natural logarithm (to base e) | 
    
      | log10 | common logarithm (to base 10) | 
    
      | modf | decomposes a number into integer
      and fractional parts | 
    
      | pow | returns a given number raised to
      another number | 
    
      | sin | sine | 
    
      | sinh | hyperbolic sine | 
    
      | sqrt | square root | 
    
      | tan | tangent | 
    
      | tanh | hyperbolic tangent |