Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report
Current view: top level - language - eval.c (source / functions) Hit Total Coverage
Test: PARI/GP v2.18.1 lcov report (development 30862-ea47bd413c) Lines: 1324 1914 69.2 %
Date: 2026-05-05 09:26:54 Functions: 118 156 75.6 %
Legend: Lines: hit not hit

Function Name Sort by function name Hit count Sort by hit count
_bitprecision0 676
_prec 11304
_precision0 1246
bincopy_relink 0
bitprecision0 42
bitprecision00 718
break0 70358
change_compo 9701769
changelex 162421406
changevalue 29490878
check_array_index 107083272
checkprec 11211
checkvalue 123984286
checkvalueptr 23308355
closure_callgen0 7
closure_callgen0prec 421
closure_callgen1 9591964
closure_callgen1prec 76681
closure_callgen2 67117
closure_callgenall 12
closure_callgenvec 5195358
closure_callgenvecdef 336
closure_callgenvecdefprec 336
closure_callgenvecprec 0
closure_callvoid1 0
closure_castgen 93847217
closure_castlong 5873
closure_context 91
closure_disassemble 0
closure_err 12990
closure_eval 306280934
closure_evalbrk 175
closure_evalgen 34052461
closure_evalnobrk 76029946
closure_evalres 936901
closure_evalvoid 144807300
closure_func_err 13862
closure_relink 0
closure_return 51375577
closure_returnupto 14931471
closure_unlink 0
closure_varn 1161710
copybin_unlink 12
copylex 9791047
copyupto 75422700
copyvalue 746851
disassemble_cast 0
err_var 0
evalstate_clone 0
evalstate_get_trace 1036227
evalstate_reset 452
evalstate_restore 56401
evalstate_restore_err 43250
evalstate_save 1431856
evalstate_set_trace 18
freeep 36610
freelex 186574640
gen_relink 0
gen_unlink 16
get_and_reset_break 41666
get_arg_name 21
get_lex 90491489
get_localbitprec 22783191
get_localprec 22381800
get_next_label 245
getlocalbitprec 3556
getlocalprec 14
gp_call 114479
gp_call2 91
gp_callbool 872130
gp_callprec 23478
gp_callvoid 0
gp_eval 39692084
gp_evalbool 26166231
gp_evalprec 20734
gp_evalupto 2052972
gp_evalvoid 4146639
gp_evalvoid2 8472
hash_from_link 0
localbitprec 3373
localprec 7847
loop_break 137906795
lvar_make_safe 0
negcmp 0
new_ptr 58686160
new_val_cell 19408
next0 25853
opcode_need_relink 0
pareval 6
pareval_worker 12
parfor 346
parfor0 346
parfor_init 0
parfor_next 0
parfor_stop 0
parfor_worker 9610
parforeach 14
parforeach0 14
parforeach_init 0
parforeach_next 0
parforeach_stop 0
parforiter_init 0
parforiter_next 0
parforiter_stop 0
parforprime 13
parforprime0 13
parforprime_init 0
parforprime_next 0
parforprime_stop 0
parforprimestep 20
parforprimestep0 7
parforprimestep_init 0
parforstep 39
parforstep0 39
parforstep_init 0
parforstep_next 0
parforstep_stop 0
parforvec 39
parforvec0 39
parforvec_init 0
parforvec_next 0
parforvec_stop 0
pari_close_evaluator 367745
pari_init_evaluator 373060
pari_self 41
parmatrix 13
parmatrix_worker 86
parsum 2062
parsum_slice_worker 7508
parvector 31
parvector_worker 649
pop_lex 5606937
pop_localprec 99229
pop_val 18960
pop_val_if_newer 425400
precision0 42
precision00 1288
ptr_proplock 9906673
push_lex 5774624
push_localbitprec 481614
push_localprec 99278
pushlex 63693823
pushvalue 42
reset_break 98519
restore_trace 5663338
restore_vars 306356189
return0 40898
safeel 0
safegcoeff 0
safegel 0
safelistel 0
set_lex 83680560
setreflex 504
st_alloc 3104792335
trace_push 311823717
zerovalue 14

Generated by: LCOV version 1.16