Quick_Overview_of_VDM_Operators

Quick_Overview_of_VDM_Operators - Quick Overview of VDM...

Info icon This preview shows pages 1–2. Sign up to view the full content.

Quick Overview of VDM Operators The Boolean type Operator Name Signature not b Negation bool bool a and b Conjunction bool * bool bool a or b Disjunction bool * bool bool a => b Implication bool * bool bool a <=> b Biimplication bool * bool bool a = b Equality bool * bool bool a <> b Inequality bool * bool bool The numeric types Operator Name Signature -x Unary minus real real abs x Absolute value real real floor x Floor real int x + y Sum real * real real x - y Difference real * real real x * y Product real * real real x / y Division real * real real x div y Integer division int * int int x rem y Remainder int * int int x mod y Modulus int * int int x ** y Power real * real real x < y Less than real * real bool x > y Greater than real * real bool x <= y Less or equal real * real bool x >= y Greater or equal real * real bool x = y Equal real * real bool x <> y Not equal real * real bool The character, quote and token types Operator Name Signature c1 = c2 Equal char * char bool c1 <> c2 Not equal char * char bool Tuple types Operator Name Signature t1 = t2 Equality T * T bool t1 <> t2 Inequality T * T bool Record types Operator Name Signature r.i Field select A * Id Ai r1 = r2
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

Image of page 2
This is the end of the preview. Sign up to access the rest of the document.
  • Spring '15
  • william
  • Algebra, Empty set

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern