Update sigma_cpu.f90 #3471

Job	Run time
Prepare the environment	1s
Flint / Lint current branch	16s
Flint / Lint develop branch	20s
Make depend / Dependencies (make depend)	52s
Flint / Create linting badge	24s
Flint / Lint changed files	54s
Nvidia / ubuntu-20.04 - nvfortran - cpu - dp	12m 34s
Intel / ubuntu-20.04 - ifx - cpu - sp	4m 20s
GNU / ubuntu-20.04 - gfortran-10 - cpu - sp	6m 10s
Intel / ubuntu-20.04 - ifx - cpu - dp	4m 25s
GNU / ubuntu-20.04 - gfortran-10 - cpu - dp	6m 24s
Nvidia / ubuntu-20.04 - nvfortran - cuda - dp	12m 28s
GNU / ubuntu-20.04 - gfortran-10 - cuda - sp	7m 10s
GNU / ubuntu-20.04 - gfortran-10 - cuda - dp	10m 11s
GNU / ubuntu-20.04 - gfortran-10 - hip - sp	12m 59s
GNU / ubuntu-20.04 - gfortran-10 - hip - dp	13m 19s
GNU / macos-13 - gfortran-11 - cpu - sp	12m 0s
GNU / macos-13 - gfortran-11 - cpu - dp	14m 22s
GNU / macos-13 - gfortran-11 - opencl - sp	5m 52s
GNU / macos-13 - gfortran-11 - opencl - dp	7m 30s
GNU / macos-13 - gfortran-12 - cpu - sp	11m 9s
GNU / macos-13 - gfortran-12 - cpu - dp	11m 28s
GNU / macos-13 - gfortran-12 - opencl - sp	5m 51s
GNU / macos-13 - gfortran-12 - opencl - dp	5m 21s
ReFrame / ReFrame - gfortran-10 - sp	2m 3s
ReFrame / ReFrame - gfortran-10 - dp	2m 8s
Develop PR Ready	1s
	2h 50m 32s

Provide feedback