Expressions using the mark up

Syntax:

${= expression =}

An expression may be a combination of constants, variables, and opertors. All internal calculations use the Java double numeric type.

Operators supported

Comment	Spaces between items are optional
Operator	Argument	Description
arg	constant or variable	Examples: 3 12.4 4E+8 ${VALUE} ${some.var}
expr	expression	Any valid combination of arguments and optional operations and parentheses
+	expr + expr	Addition
-	-expr	Unary negation
-	expr - expr	Subtraction
*	expr * expr	Multiplication
/	expr / expr	Division
^	expr ^ expr	Exponentiation
sin	sin expr	Radian Sine of expr
cos	cos expr	Radian Cosine of expr
tan	cos expr	Radian Tangent of expr
( )	( expr )	Parenthetical grouping of an expression

Test Blank Expressions

Build blank expression page

script
start	Page Builder
line	~1a:${==}~
line	~1b:${= =}~
line	~1c:${= =}~
page	ExpressionPage

Render it

Response Requester
uri	valid?
ExpressionPage	true

Contents

Response Examiner
type	string?
contents

Response Examiner
type	wrapped html?
contents

Verify results

Response Examiner
type	pattern	matches?
contents	~1a:~	true
contents	~1b:~	true
contents	~1c:~	true

Test Single Argument Expressions

Build expression page

script
start	Page Builder
line	~2a:${=3=}~
line	~2b:${= 4.2 =}~
line	~2c:${= 2E+1 =}~
line	~2d:${= 2.3E+42 =}~
line	~2e:${= 4.2E + 24 =}~
page	ExpressionPage

Render it

Response Requester
uri	valid?
ExpressionPage	true

Contents

Response Examiner
type	string?
contents

Response Examiner
type	wrapped html?
contents

Verify results

Response Examiner
type	pattern	matches?
contents	~2a:3~	true
contents	~2b:4.2~	true
contents	~2c:20~	true
contents	~2d:2.3E+42~	true
contents	~2e:4.2E+24~	true

Test spaces around experssions

Build expression page

script
start	Page Builder
line	~3a:${=1+1=}~
line	~3b:${=2 + 2=}~
line	~3c:${= 3 + 3=}~
line	~3d:${=4 + 4 =}~
line	~3e:${=5 +5 =}~
page	ExpressionPage

Render it

Response Requester
uri	valid?
ExpressionPage	true

Contents

Response Examiner
type	string?
contents

Response Examiner
type	wrapped html?
contents

Verify results

Response Examiner
type	pattern	matches?
contents	~3a:2~	true
contents	~3b:4~	true
contents	~3c:6~	true
contents	~3d:8~	true
contents	~3e:10~	true

Test each operator

Build expression page

script
start	Page Builder
line	~4plus:${= 1 + 2 =}~
line	~4minus:${= 2 - 3 =}~
line	~4unary:${= -12 =}~
line	~4mult:${= 3 * 4 =}~
line	~4div:${= 4 / 5 =}~
line	~4exp:${=%2d: 5 ^ 6 =}~
line	~4sin1:${=%5.4f: sin0.39269875 =}~
line	~4sin2:${=%5.4f: sin 0.39269875 =}~
line	~4sin3:${=%5.4f: sin(0.39269875) =}~
line	~4sin4:${=%5.4f: sin(3.14159/8) =}~
line	~4sin5:${=%5.4f: sin (3.14159/8) =}~
line	~4cos:${=%5.4f: cos(3.14159 / 8) =}~
line	~4tan:${=%5.4f: tan(3.14159 / 8) =}~
page	ExpressionPage

Render it

Response Requester
uri	valid?
ExpressionPage	true

Contents

Response Examiner
type	string?
contents

Response Examiner
type	wrapped html?
contents

Verify results

Response Examiner
type	pattern	matches?
contents	~4plus:3~	true
contents	~4minus:-1~	true
contents	~4unary:-12~	true
contents	~4mult:12~	true
contents	~4div:0.8~	true
contents	~4exp:15625~	true
contents	~4sin1:0.3827~	true
contents	~4sin2:0.3827~	true
contents	~4sin3:0.3827~	true
contents	~4sin4:0.3827~	true
contents	~4sin5:0.3827~	true
contents	~4cos:0.9239~	true
contents	~4tan:0.4142~	true

Test parentheses

Build expression page

script
start	Page Builder
line	~5a:${= 2 * 3 + 4 / 2 - 3 =}~
line	~5b:${= 2 * ( 3 + 4 ) / 2 - 3 =}~
line	~5c:${= 2 * ( 3 + 4 ) / ( 2 - 3 ) =}~
line	~5d:${= 2 * ( 3 + ( 4 / ( 2 - 3 ) ) ) =}~
page	ExpressionPage

Render it

Response Requester
uri	valid?
ExpressionPage	true

Contents

Response Examiner
type	string?
contents

Response Examiner
type	wrapped html?
contents

Verify results

Response Examiner
type	pattern	matches?
contents	~5a:5~	true
contents	~5b:4~	true
contents	~5c:-14~	true
contents	~5d:-2~	true