Explain sign of arg1/arg2

ethereum · Jul 3, 2017 · 4218665 · 4218665
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commit 4218665
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diff --git a/EIPS/eip-145.md b/EIPS/eip-145.md
@@ -34,6 +34,7 @@ The `SHL` instruction (shift left) pops 2 values from the stack, `arg1` and `arg
 ```
 
 Notes:
+- The value (`arg1`) is interpreted as an unsigned number.
 - The shift amount (`arg2`) is interpreted as an unsigned number.
 - If the shift amount (`arg2`) is greater or equal 256 the result is 0.
 
@@ -46,6 +47,7 @@ floor(arg1 / 2^arg2)
 ```
 
 Notes:
+- The value (`arg1`) is interpreted as an unsigned number.
 - The shift amount (`arg2`) is interpreted as an unsigned number.
 - If the shift amount (`arg2`) is greater or equal 256 the result is 0.
 
@@ -58,6 +60,7 @@ floor(arg1 / 2^arg2)
 ```
 
 Notes:
+- The value (`arg1`) is interpreted as a signed number.
 - The shift amount (`arg2`) is interpreted as an unsigned number.
 - If the shift amount (`arg2`) is greater or equal 256 the result is 0 if `arg1` is non-negative or -1 if `arg1` is negative.