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 - hyperell.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30759-17b423fb9b) Lines: 1173 1251 93.8 % Date: 2026-03-20 09:26:27 Functions: 104 107 97.2 % Legend: Lines: hit not hit

Function Name	Hit count
F2x_genus2_find_trans	238
F2x_genus2_trans	280
F2x_genus2charpoly_naive	392
F2x_genus_red	231
F2x_genus_redoo	693
F2x_pseudodisc	434
F2xqX_quad_nbroots	210
Fl2V_next	97965182
FlxV_Fl2_eval_pre	766955
FlxV_constant	19544
Flx_difftable	19544
Flx_genus2charpoly_naive	19544
FpXXQ_mul	16863
FpXXQ_red	20265
FpXXQ_sqr	3402
FpXXX_Fp_mul	441
FpXXX_red	441
FpXXX_renormalize	2247
Fq_diff_red	469
Fq_get_UV	154
RgXY_swapsafe	1176
RgX_RgM2_eval	306561
ZC_to_padic	10094
ZM_to_padic	1309
ZX2_affine_unscale	167032
ZX2_unscale	173246
ZXC_to_padic	469
ZXM_to_padic	147
ZXX_to_FpXC	469
ZX_apolar	1491
ZX_hyperellred	8193
ZX_to_padic	1743
ZlXQX_hyperellpadicfrobenius	154
ZlX_hyperellpadicfrobenius	1309
ZpXQXXQ_frob	469
ZpXQXXQ_invsqrt	154
ZpXQXXQ_mul	1358
ZpXQXXQ_red	1806
ZpXQXXQ_sqr	448
ZpXXQ_frob	10094
ZpXXQ_invsqrt	1309
Zst_normval	588
Zst_red1	588
Zst_red3	77
Zst_reduce	1176
Zst_val	588
algo51	52534
algo52	105506
algo56	52205
algo56bis	329
algo57	54438
algo57bis	3563
charpoly_funceq	679
check_hyperell	314157
check_hyperell_Q	54494
check_hyperell_Rg	65296
check_hyperell_vc	65282
diff_red	10094
ellfromeqncharpoly	623
frac_to_Fp	133847
frac_to_Fq	6573
genus2_eulerfact	1428
genus2_eulerfact2	224
genus2_eulerfact2_semistable	231
genus2_eulerfact_semistable	1015
genus2_halfstablemodel	77
genus2_halfstablemodel_i	77
genus2_red5	0
genus2_redmodel	1015
genus2_type5	1029
genus2charpoly	889
get_UV	1309
get_basis	1764
get_ep	130093
get_extremal_even	252
get_extremal_odd	0
hyperell_Weil_bound	686
hyperell_redQ	108890
hyperell_reverse	52436
hyperellchangecurve	65296
hyperellcharpoly	20629
hyperelldisc	120721
hyperellextremalmodels	7
hyperellextremalmodels_i	1029
hyperellextremalmodels_nb	1036
hyperellgenus	360196
hyperellisoncurve	3493
hyperellminimaldisc	14
hyperellminimalmodel	54452
hyperellordinate	35
hyperellpadicfrobenius	1309
hyperellpadicfrobenius0	595
hyperellred	42
is_sing	14
minimalmodel_getH	50735
minimalmodel_merge	54452
next_model	3892
nfellcharpoly	0
nfhyperellpadicfrobenius	154
polreduce	16386
red_Cremona_Stoll	8193
redqfbsplit	35
revdigits	12026
test53	149115
test55	194492
to_ZX	1029007
xdminusone	5852

Generated by: LCOV version 1.16