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 30666-e2f9826198) Lines: 1554 1658 93.7 % Date: 2026-02-04 09:22:32 Functions: 149 156 95.5 % Legend: Lines: hit not hit

Function Name	Hit count
Q_lval	9428038
Q_lvalrem	6302815
Q_pval	9423845
Q_pvalrem	6304413
ZV_Z_dvd	1309
ZV_lval	0
ZV_lvalrem	0
ZV_pval	30934
ZV_pvalrem	4182935
ZXV_pvalrem	0
ZXX_pvalrem	1197
ZX_gen_pvalrem	1197
ZX_lval	748889
ZX_lvalrem	721
ZX_pval	101303
ZX_pvalrem	4301251
Z_lval	70258414
Z_lvalrem	64493641
Z_lvalrem_stop	117106928
Z_pval	50322935
Z_pvalrem	69394800
Z_pvalrem_DC	2185105
_Fp_div	163005
_domul	2258886
affgc	2590
chk_true_err	189
closure_identical	70
cmp_str	3681020
cmp_universal	88994943
cmp_universal_rec	39283221
cmpfrac	4589519
cmpgen	161
cmpifrac	455583
cmprfrac	81308
col_test	294560
ctop	14
cvstop2	399
cvtop	600550
cvtop2	17619841
cx_approx0	2558106
cx_approx_equal	49981
ensure_nb	810971
factorial_lval	1992907
frac_lval	381846
frac_val	292596
gabs	53435616
gassoc_proto	2463140
gcmp	298457935
gcmpsg	762247
gcvtop	126
gen_2val	773614
gen_2valrem	4914492
gen_Z_divides	6859
gen_lval	870801
gen_lvalrem	8471991
gen_pval	132237
gen_pvalrem	8484192
gen_pvalrem_DC	11756
gen_z_divides	4935
gequal	242443142
gequal0	2498513488
gequal1	341912909
gequalX	8485542
gequal_try	3194295
gequalm1	74233534
gequalsg	43988
gexpo	842126583
gexpo_safe	842420543
gidentical	54831289
gisexactzero	57213587
glength	5148763
gmax	79310
gmaxgs	0
gmequal_try	28
gmin	12179
gmings	0
gneg	463408873
gneg_i	129777087
gpexponent	90215
gpvaluation	3934
gsigne	81360703
gtolist	5930
gtolong	77
gtranslength	3878
gvaluation	1400173
identicalrr	1547
intdvd	91
is_monomial_test	22658931
is_negative	0
isexactzero	576083543
isless_iu	15094833
isrationalzero	768866979
itop2_coprime	17612592
lexcmp	1616268
lexcmp_i	1616268
lexcmp_s_matvec	21
lexcmp_scal_matvec	357
lexcmp_scal_vecsmall	42
lexcmp_similar	372034
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	37134631
map_proto_lGL	126
mat_test	16366
matsize	1862
minval	137186
mklist	6835
mklist_typ	6891
mklistcopy	63
mkmap	49
normalizepol	99404126
normalizepol_approx	0
normalizepol_lg	938060718
normalizeser	13408352
padic_to_Fl	421701
padic_to_Fp	4298
polequal	12730306
polidentical	1528750
qtop	42
quadtofp	252
r_approx0	1809574
roughtype	3232879
serequal	420
seridentical	14
sizedigit	7
u_lval	71591923
u_lvalrem	89594370
u_lvalrem_stop	134346007
u_pval	136892
u_pvalrem	2624843
vecequal	5528772
vecidentical	5441571
vecindexmax	503302
vecindexmin	182059
vecmax	66200
vecmax0	226890
vecmin	35234
vecmin0	147402
z_lval	1836725
z_lvalrem	87333
z_pval	1318004
z_pvalrem	399
zx_lval	28931

Generated by: LCOV version 1.16