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:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

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 - basemath - gen2.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30851-7844d7b3a5) Lines: 1554 1658 93.7 % Date: 2026-05-03 09:26:29 Functions: 149 156 95.5 % Legend: Lines: hit not hit

Function Name	Hit count
Q_lval	9430168
Q_lvalrem	6302836
Q_pval	9425976
Q_pvalrem	6304449
ZV_Z_dvd	1358
ZV_lval	0
ZV_lvalrem	0
ZV_pval	30934
ZV_pvalrem	4182995
ZXV_pvalrem	0
ZXX_pvalrem	1400
ZX_gen_pvalrem	1400
ZX_lval	766536
ZX_lvalrem	721
ZX_pval	102493
ZX_pvalrem	4305029
Z_lval	70328847
Z_lvalrem	64494209
Z_lvalrem_stop	116821592
Z_pval	50390692
Z_pvalrem	69394114
Z_pvalrem_DC	2185168
_Fp_div	163005
_domul	2258886
affgc	2590
chk_true_err	189
closure_identical	70
cmp_str	3681020
cmp_universal	89002096
cmp_universal_rec	39283384
cmpfrac	4593075
cmpgen	161
cmpifrac	455947
cmprfrac	81308
col_test	294560
ctop	14
cvstop2	399
cvtop	600616
cvtop2	17620549
cx_approx0	2507936
cx_approx_equal	2496154
ensure_nb	810971
factorial_lval	1993225
frac_lval	381841
frac_val	292596
gabs	53577835
gassoc_proto	2463200
gcmp	282981661
gcmpsg	762248
gcvtop	126
gen_2val	791968
gen_2valrem	4914972
gen_Z_divides	6854
gen_lval	889638
gen_lvalrem	8475795
gen_pval	133427
gen_pvalrem	8488016
gen_pvalrem_DC	11751
gen_z_divides	4935
gequal	241747244
gequal0	2695166550
gequal1	339963215
gequalX	8508161
gequal_try	5317049
gequalm1	74233558
gequalsg	43988
gexpo	842890154
gexpo_safe	843177691
gidentical	123814632
gisexactzero	47327737
glength	5150145
gmax	79310
gmaxgs	0
gmequal_try	28
gmin	12180
gmings	0
gneg	466052551
gneg_i	140286133
gpexponent	90229
gpvaluation	3934
gsigne	83745231
gtolist	5965
gtolong	77
gtranslength	3878
gvaluation	1396060
identicalrr	1547
intdvd	91
is_monomial_test	19829522
is_negative	0
isexactzero	743972590
isless_iu	15161587
isrationalzero	901499184
itop2_coprime	17612740
lexcmp	1617660
lexcmp_i	1617660
lexcmp_s_matvec	21
lexcmp_scal_matvec	357
lexcmp_scal_vecsmall	42
lexcmp_similar	372030
lexcmp_vec_mat	98
lexcmp_vecsmall_mat	42
lexcmp_vecsmall_other	196
lexcmp_vecsmall_vec	154
lexcmpgs	42
lexcmpsg	343
list_cmp	343
listinsert	35014
listinsert0	35028
listpop	21917
listpop0	56
listput	776125
listput0	724955
listsort	21
map_proto_G	462
map_proto_lG	37491902
map_proto_lGL	126
mat_test	16366
matsize	1862
minval	77315
mklist	6870
mklist_typ	6926
mklistcopy	70
mkmap	49
normalizepol	99625381
normalizepol_approx	0
normalizepol_lg	963004376
normalizeser	15095853
padic_to_Fl	421703
padic_to_Fp	4550
polequal	10685062
polidentical	5629340
qtop	42
quadtofp	252
r_approx0	1809679
roughtype	3235663
serequal	420
seridentical	14
sizedigit	7
u_lval	71610260
u_lvalrem	89646348
u_lvalrem_stop	134189829
u_pval	136778
u_pvalrem	2625009
vecequal	5574557
vecidentical	5441437
vecindexmax	503300
vecindexmin	182759
vecmax	66198
vecmax0	226888
vecmin	35234
vecmin0	147402
z_lval	1836765
z_lvalrem	87348
z_pval	1318025
z_pvalrem	399
zx_lval	28931

Generated by: LCOV version 1.16