我在 Matlab 2019a 中计算了以下内容，请参见下面的代码。我对现值（DiffPV，DiffPVpercentage）的巨大差异感到惊讶，而贴现率只有很小的差异（DiffIRR，DiffIRRpercentage）。某处是否存在编码错误？或者这可能只是打折的正常效果？我怎么能检查呢？由于其他现金流数据不会出现这种情况，我认为这是一个编码/编程问题，但我不确定如何检查。
clc
clear
close all
CF = 1.0e+12 * [-1.767330098188526...
0.060733504300760...
0.060733504300760...
0.060733503508760...
0.060733504300760...
0.060733504300760...
0.060733503508760...
0.060733504300760...
0.060733504300760...
0.060733503508760...
0.060733504300760...
0.060733504300760...
0.060733501978648...
0.060733502770648...
0.060733502770648...
0.060733501990451...
0.060733502770648...
0.060733502770648...
0.060733502002254...
0.060733502770648...
0.060733502770648...
0.060733502014057...
0.060733502770648...
0.060733502770648...
0.060733502025860...
0.060733502770648...
0.060733502770648...
0.060733502037663...
0.060733502770648...
0.060733502770648...
0.060733502049466...
0.060733502770648...
0.060733502770648...
0.060733502061269...
0.060733502770648...
0.060733502770648...
0.060733502073072...
0.060733502770648...
0.060733502770648...
0.060733502084875...
0.060733502770648...
0.060733502770648...
0.060733502096678...
0.060733502770648...
0.060733502770648...
0.060733502108481...
0.060733502770648...
0.060733502770648...
0.060733502120284...
0.060733502770648...
0.060733502770648...
0.060733502132087...
0.060733502770648...
0.060733502770648...
0.060733502143890...
0.060733502770648...
0.060733502770648...
0.060733502155693...
0.060733502770648...
0.060733502770648...
0.060733502167497...
0.060733502770648...
0.060733502770648...
0.060733502179300...
0.060733502770648...
0.060733502770648...
0.060733502191103...
0.060733502770648...
0.060733502770648...
0.060733502202906...
0.060733502770648...
0.060733502770648...
0.060733502214709...
0.060733502770648...
0.060733502770648...
0.060733502226512...
0.060733502770648...
0.060733502770648...
0.060733502238315...
0.060733502770648...
0.060733502770648...
0.060733502250118...
0.060733502770648...
0.060733502770648...
0.060733502261921...
0.060733502770648...
0.060733502770648...
0.060733502273724...
0.060733502770648...
0.060733502770648...
0.060733502285527...
0.060733502770648...
0.060733502770648...
0.060733502297330...
0.060733502770648...
0.060733502770648...
0.060733502309133...
0.060733502770648...
0.060733502770648...
0.060733502320936...
0.060733502770648...
0.060733502770648...
0.060733502332739...
0.060733502770648...
0.060733502770648...
0.060733502344542...
0.060733502770648...
0.060733502770648...
0.060733502356345...
0.060733502770648...
0.060733502770648...
0.060733502368148...
0.060733502770648...
0.060733502770648...
0.060733502379951...
0.060733502770648...
0.060733502770648...
0.060733502391754...
0.060733502770648...
0.060733502770648...
0.060733502376682...
0.060733502770648...
0.060733502770648...
0.060733502389829...
0.060733502770648...
0.060733502770648...
0.060733502402976...
0.060733502770648...
0.060733502770648...
0.060733502416123...
0.060733502770648...
0.060733502770648...
0.060733502429270...
0.060733502770648...
0.060733502770648...
0.060733502442416...
0.060733502770648...
0.060733502770648...
0.060733502455563...
0.060733502770648...
0.060733502770648...
0.060733502468710...
0.060733502770648...
0.060733502770648...
0.060733502481857...
0.060733502770648...
0.060733502770648...
0.060733502495004...
0.060733502770648...
0.060733502770648...
0.060733502508150...
0.060733502770648...
0.060733502770648...
0.060733502521297...
0.060733502770648...
0.060733502770648...
0.060733502534444...
0.060733502770648...
0.060733502770648...
0.060733502547591...
0.060733502770648...
0.060733502770648...
0.060733502560738...
0.060733502770648...
0.060733502770648...
0.060733502573884...
0.060733502770648...
0.060733502770648...
0.060733502587031...
0.060733502770648...
0.060733502770648...
0.060733502600178...
0.060733502770648...
0.060733502770648...
0.060733502613325...
0.060733502770648...
0.060733502770648...
0.060733502626472...
0.060733502770648...
0.060733502770648...
0.055556792699142...
0.055556792830172...
0.055556792830172...
0.055556792710061...
0.055556792830172...
0.055556792830172...
0.055556792720980...
0.055556792830172...
0.055556792830172...
0.055556792731900...
0.055556792830172...
0.055556792830172...
0.055556792742819...
0.055464744371412...
0.055464744371412...
0.055464744294978...
0.055464744371412...
0.055464744371412...
0.055464744305897...
0.055464744371412...
0.055464744371412...
0.055464744316816...
0.055464744371412...
0.055464744371412...
0.055464744327735...
0.055464744371412...
0.055464744371412...
0.055464744338654...
0.055464744371412...
0.055464744371412...
0.055464744349574...
0.055464744371412...
0.055464744371412...
0.055464744360493...
0.055464744371412...
0.055464744371412...
0.055464745842000...
0.055464745842000...
0.055464745842000...
0.055464745842000...
0.055464745842000...
0.055464745842000...
0.055464745842000...
0.055464745842000...
0.055464745842000...
0.055464745842000...
0.055464745842000...
0.055464745842000...
0.055464745842000...
0.055464745842000...
0.055464745842000...
0.055464745842000...
0.055464745842000...
0.055464745842000...
0.055464745842000...
0.055464745842000...
0.055464745842000...
0.055464745842000...
0.055464745842000...
0.055464745842000...
0.105013255842000...
0.105136510842000...
0.105259765842000...
0.105383020842000...
0.105506275842000...
0.105629530842000...
0.105752785842000...
0.105876040842000...
0.105999295842000...
0.106122550842000...
0.106245805842000...
0.106369060842000...
0.106492315842000...
0.106615570842000...
0.106738825842000...
0.106862080842000...
0.106985335842000...
0.107108590842000...
0.107231845842000...
0.107355100842000...
0.107478355842000...
0.107601610842000...
0.107724865842000...
0.107848120842000...
0.107971375842000...
0.108094630842000...
0.108217885842000...
0.108341140842000...
0.108464395842000...
0.108587650842000...
0.108710905842000...
0.108834160842000...
0.108957415842000...
0.109080670842000...
0.109203925842000...
0.109327180842000...
0.109450435842000...
0.109573690842000...
0.109696945842000...
0.109820200842000...
0.109943455842000...
0.110066710842000...
0.110189965842000...
0.110313220842000...
0.110436475842000...
0.110559730842000...
0.110682985842000...
0.110806240842000...
0.110929495842000...
0.110929495842000...
0.110929495842000...
0.110929495842000...
0.110929495842000...
0.110929495842000...
0.110929495842000...
0.110929495842000...
0.110929495842000...
0.110929495842000...
0.110929495842000...
0.110929495842000...
0.110929495842000];
%% Test
IRR1 = 0.034366083131917;
IRR2 = 0.034364293602634;
DiffIRR = IRR1-IRR2
DiffIRRpercentage = (IRR1-IRR2)/IRR2
% PV1
for index = 1:length(CF)
CFdiscounted1(index) = CF(index)/((1+IRR1)^(index-1));
end
PV1 = sum(CFdiscounted1)
% PV2
for index = 1:length(CF)
CFdiscounted2(index) = CF(index)/((1+IRR2)^(index-1));
end
PV2 = sum(CFdiscounted2)
DiffPV = PV1-PV2
DiffPVpercentage = (PV1-PV2)/PV2