d0s3t3ch/RandomWOW
1
0
Fork 0
mirror of https://git.wownero.com/wownero/RandomWOW.git synced 2024-08-15 00:23:14 +00:00
Code Issues Projects Releases Wiki Activity

Updated documentation

Browse source
This commit is contained in:
tevador 2019-05-15 23:13:22 +02:00
parent 42cb2fc852
commit 1029098719
4 changed files with 10 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

6
doc/specs.md
View file

@ -260,7 +260,7 @@ Integer registers `r0`-`r7` can be the source or the destination operands of int
Floating point registers `a0`-`a3` are read-only and their value is fixed for a given VM program. They can be the source operand of any floating point instruction. The value of these registers is restricted to the interval `[1, 4294967296)`.
Floating point registers `f0`-`f3` are the "additive" registers, which can be the destination of floating point addition and subtraction instructions. The absolute value of these registers will not exceed `1.0e+12`.
Floating point registers `f0`-`f3` are the "additive" registers, which can be the destination of floating point addition and subtraction instructions. The absolute value of these registers will not exceed about `3.0e+14`.
Floating point registers `e0`-`e3` are the "multiplicative" registers, which can be the destination of floating point multiplication, division and square root instructions. Their value is always positive.
@ -574,9 +574,9 @@ Double precision floating point addition. FADD_R uses a group A register source
Double precision floating point subtraction. FSUB_R uses a group A register source operand, FSUB_M uses a memory operand.
#### 5.3.4 FSCAL_R
This instruction negates the number and multiplies it by <code>2<sup>x</sup></code>. `x` is calculated by taking the 5 least significant digits of the biased exponent and interpreting them as a binary number using the digit set `{+1, -1}` as opposed to the traditional `{0, 1}`. The possible values of `x` are all odd numbers from -31 to +31.
This instruction negates the number and multiplies it by <code>2<sup>x</sup></code>. `x` is calculated by taking the 4 least significant digits of the biased exponent and interpreting them as a binary number using the digit set `{+1, -1}` as opposed to the traditional `{0, 1}`. The possible values of `x` are all odd numbers from -15 to +15.
The mathematical operation described above is equivalent to a bitwise XOR of the binary representation with the value of `0x81F0000000000000`.
The mathematical operation described above is equivalent to a bitwise XOR of the binary representation with the value of `0x80F0000000000000`.
#### 5.3.5 FMUL_R