Arithmetic

Arithmetic

Addition

Razor expression	Go Template	Result	Note
@(1 + 2);	{{ add 1 2 }}	3	Addition
@add(4, 5);	{{ add 4 5 }}	9	or add
@sum(6,7);	{{ sum 6 7 }}	13	or sum
@(2+3);	{{ add 2 3 }}	5	Spaces are optional
@( 8 + 9 );	{{ add 8 9 }}	17	You can insert an arbitrary number of spaces in expressions
@sum(1.2, 3.4);	{{ sum 1.2 3.4 }}	4.6	It also works with floating point numbers
@sum(1, 2, 3, 4);	{{ sum 1 2 3 4 }}	10	It is possible to supply multiple arguments to addition operation
@add(list(1,2,3,4));	{{ add (list 1 2 3 4) }}	10	this is useful on this line since there is ambiguity on where the expression finish

Subtraction

Razor expression	Go Template	Result	Note
@(4 - 2);	{{ sub 4 2 }}	2	Subtraction
@sub(4, 2);	{{ sub 4 2 }}	2	or sub
@subtract(4, 2);	{{ subtract 4 2 }}	2	or subtract

Negative values

Razor expression	Go Template	Result	Note
@(-23);	{{ -23 }}	-23	Negative value
@(2 + -23);	{{ add 2 -23 }}	-21	Operation with negative value
@(2 + -(5 * 3));	{{ add 2 (sub 0 (mul 5 3)) }}	-13	Operation with negative expression

Product

Razor expression	Go Template	Result	Note
@(2 * 3);	{{ mul 2 3 }}	6	Multiplication
@mul(4, 5);	{{ mul 4 5 }}	20	or mul
@multiply(6, 7);	{{ multiply 6 7 }}	42	or multiply
@prod(8, 9);	{{ prod 8 9 }}	42	or prod
@product(10, 11);	{{ product 10 11 }}	110	or product
@mul(1, 2, 3, 4);	{{ mul 1 2 3 4 }}	24	It is possible to supply multiple arguments to multiplication operation
@mul(list(5,6,7,8));	{{ mul (list 5 6 7 8) }}	1680	or even an array

Division

Razor expression	Go Template	Result	Note
@(4 / 2);	{{ div 4 2 }}	2	Division
@(13 ÷ 3);	{{ div 13 3 }}	4.333333333333333	you can use the ÷ character instead of /
@div(20, 4);	{{ div 20 4 }}	5	or div
@divide(10, 4);	{{ divide 10 4 }}	2.5	or divide
@quotient(22, 10);	{{ quotient 22 10 }}	2.2	or quotient

modulo

Razor expression	Go Template	Result	Note
@(4 % 3);	{{ mod 4 3 }}	1	Modulo
@mod(12, 5);	{{ mod 12 5 }}	2	or mod
@modulo(20, 6)	{{ modulo 20 6 }}	2	or modulo

Power

Razor expression	Go Template	Result	Note
@(4 ** 3);	{{ pow 4 3 }}	64	Power
@pow(12, 5);	{{ pow 12 5 }}	248832	or pow
@power(3, 8);	{{ power 3 8 }}	6561	or power
@pow10(3);	{{ pow10 3 }}	1000	Power 10
@power10(5);	{{ power10 5 }}	100000	or power10
@(1e+5);	{{ 1e+5 }}	100000	Scientific notation (positive)
@(2e-3);	{{ 2e-3 }}	0.002	Scientific notation (negative)

Bit operators

Razor expression	Go Template	Result	Note
@(1 « 8);	{{ lshift 1 8 }}	256	Left shift
@lshift(3, 5);	{{ lshift 3 5 }}	96	or lshift
@leftShift(4, 4);	{{ leftShift 4 4 }}	64	or leftShift
@(1024 » 4);	{{ rshift 1024 4 }}	64	Right shift
@rshift(456, 3);	{{ rshift 456 3 }}	57	or rshift
@rightShift(72, 1);	{{ rightShift 72 1 }}	36	or rightShift
@(65535 & 512);	{{ band 65535 512 }}	512	Bitwise AND
@band(12345, 678);	{{ band 12345 678 }}	32	or band
@bitwiseAND(222, 111);	{{ bitwiseAND 222 111 }}	78	or bitwiseAND
@@(1 \| 2 \| 4);	{{ bor (bor 1 2) 4 }}	7	Bitwise OR
@bor(100, 200, 300);	{{ bor 100 200 300 }}	492	or bor
@bitwiseOR(64, 256, 4);	{{ bitwiseOR 64 256 4 }}	324	or bitwiseOR
@(1 ^ 2 ^ 4);	{{ bxor (bxor 1 2) 4 }}	7	Bitwise XOR
@bxor(100, 200, 300);	{{ bxor 100 200 300 }}	384	or bxor
@bitwiseXOR(64, 256, 4);	{{ bitwiseXOR 64 256 4 }}	324	or bitwiseXOR
@(255 &^ 4);	{{ bclear 255 4 }}	-	Bitwise Clear
@bclear(0xff, 3, 8);	{{ bclear 0xff 3 8 }}	-	or bclear
@bitwiseClear(0xf, 7);	{{ bitwiseClear 0xf 7 }}	-	or bitwiseClear

Other mathematic functions

Special cases

There are special behavior for certain operators depending of the arguments:

String multiplication

@("" * 100) will result in {{ mul “” 100 }} which result in: