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 - anal.c (source / functions) Hit Total Coverage
Test: PARI/GP v2.18.1 lcov report (development 30676-32b8a71ec1) Lines: 637 695 91.7 %
Date: 2026-02-14 09:22:40 Functions: 95 101 94.1 %
Legend: Lines: hit not hit

Function Name Sort by function name Hit count Sort by hit count
gp_read_str 0
gp_read_str_bitprec 0
gp_read_str_prec 0
name_var 0
pari_add_function 0
pari_var_next_temp 0
fetch_var_value 7
gdivente 7
gdivrounde 7
gmode 7
gshiftle 7
gshiftre 7
check_name 8
pari_var_next 8
kill0 18
killep 18
install 20
alias0 28
arity0 28
bin_read 28
varlower 34
eval_mnemonic 35
bin_number_len 37
_lower 42
_higher 49
addhelp 50
gdive 56
hex_read 74
binary_read 102
strtobin_len 102
varhigher 105
hex_number_len 108
var_register 118
varentries_reset 118
vars_to_RgXV 175
real_0_digits 196
IS_ID 457
pari_is_default 979
pari_isbdigit 1064
gpolvar 1183
gshift_right 1392
vars_sort_inplace 1428
pari_var_close 1890
pari_var_init 1900
is_ulong 1912
_given_value 3010
cmp_by_var 5150
real_read_more 5676
pari_fill_hashtable 5690
varentries_set 9385
compile_str 10992
varstate_restore 13124
varentries_unset 16294
gsub1e 20965
ifpari_multi 30723
initep 36295
exponent 75558
real_read 86675
strtor 86675
fetch_var 87439
gmule 178691
pari_set_varstate 371257
var_restore 384386
fetch_user_var 454146
fetch_entry 454260
pari_var_create 484713
varstate_save 516493
is_long 528174
gadde 536517
readseq 804235
readseq_i 804235
dec_read_more 1042076
dec_strtoi_len 1042076
check_proto 2696070
isreturn 2696070
fill_hashtable_single 2720750
insertep 2756927
skipstring 3822096
dec_number_len 4138093
fetch_var_higher 8421833
delete_var 8509330
is_entry 9255113
ifpari 13078466
gsube 15455370
orpari 16723451
do_alias 21960882
fetch_entry_raw 22375730
gadd1e 25685202
skipexponent 31526911
skipconstante 31528653
skipdigits 31534936
int_read 31542072
strtoi 31542072
findentry 31631817
dec_read 31634321
number 31709879
ifpari_void 42384269
andpari 64287528
pari_lex 114146560
ishex 140333129
isbin 140333185

Generated by: LCOV version 1.16