Arithmetic Operations in SML/NJ

Arithmetic Operations in SML/NJ

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In SML arithmetic operations work on similar datatypes of elements

for e.g. int is added with int, real is added with real (Hear float number is real)

Addition (+) operation: (work for both int and real.)

e.g. 
val real_addition =10.5 + 4.0;  (Result: val real_addition = 14.5 : real)
val int_addition  = 10 + 4;    (Result: val int_addition = 14 : int)

Subtraction (-) operation: (work for both int and real.)

e.g. 
val real_sub =10.5 - 4.0;  (Result: val real_sub = 6.5 : real)
val int_sub  = 10 - 4;    (Result: val int_sub = 6 : int)

Multiplication (+) operation: (work for both int and real.)

e.g. 
val real_mul =10.5 + 4.0;  (Result: val real_mul = 42.0 : real)
val int_mul  = 10 * 4;   (Result: val int_mul = 40 : int)

For division, we have a separate operator

(/) operator:  (work for real.) 

val real_div = 10.5 / 4.0;  (Result:  val real_div = 3.5 : real)


(div) operator:  (work for int.) 

val int_div  = 10 div 4;    (Result: val int_div = 2 : int, rounding down *)


Remainder

val int_remainder = 10 mod 4;    (val int_remainder = 2 : int)


SML throws an error if int and real datatype values are added.
Arithmetic operations SML/NJ  


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