Add function to calculate minimum bits required to represent code length

Project.toml

@@ -1,7 +1,7 @@
 name = "GNSSSignals"
 uuid = "52c80523-2a4e-5c38-8979-05588f836870"
 authors = ["Soeren Zorn <[email protected]>"]
-version = "0.12.1"
+version = "0.12.2"
 
 [deps]
 DocStringExtensions = "ffbed154-4ef7-542d-bbb7-c09d3a79fcae"

src/GNSSSignals.jl

@@ -28,7 +28,8 @@ module GNSSSignals
         get_quadrant_size_power,
         get_carrier_amplitude_power,
         fpcarrier_phases!,
-        fpcarrier!
+        fpcarrier!,
+        min_bits_for_code_length
 
     abstract type AbstractGNSSSystem end
 

src/carrier.jl

@@ -127,6 +127,7 @@ function fpcarrier_phases!(
         fixed_point_phase = fixed_point_phase + delta
         phases[i] = T(fixed_point_phase >> fixed_point)
     end
+    phases
 end
 
 """
@@ -179,4 +180,5 @@ function fpcarrier!(
         num_samples = num_samples,
         bits = bits
     )
+    carrier
 end

src/common.jl

@@ -48,3 +48,17 @@ julia> get_code_unsafe(GPSL1, 10.3, 1)
 @inline function get_code_center_frequency_ratio(::Type{T}) where T <: AbstractGNSSSystem
     get_code_frequency(T) / get_center_frequency(T)
 end
+
+"""
+$(SIGNATURES)
+
+Minimum bits that are needed to represent the code length
+"""
+function min_bits_for_code_length(::Type{S}) where S <: AbstractGNSSSystem
+    for i = 1:32
+        if get_code_length(S) * get_secondary_code_length(S) <= 1 << i
+            return i
+        end
+    end
+    return 0
+end