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 30703-cd958ce78c) Lines: 1146 1220 93.9 % Date: 2026-02-23 09:22:43 Functions: 101 103 98.1 % Legend: Lines: hit not hit

Function Name	Hit count
genus2_red5	0
nfellcharpoly	0
hyperellminimaldisc	14
is_sing	14
F2xqX_quad_nbroots	21
F2x_genus2_find_trans	28
genus2_eulerfact2	28
F2x_genus_red	35
genus2_eulerfact2_semistable	35
hyperellordinate	35
redqfbsplit	35
F2x_genus2_trans	42
algo56bis	42
hyperellred	42
F2x_pseudodisc	56
Zst_red3	77
genus2_halfstablemodel	77
genus2_halfstablemodel_i	77
F2x_genus2charpoly_naive	84
ZX_apolar	91
F2x_genus_redoo	105
ellfromeqncharpoly	140
ZXM_to_padic	147
Fq_get_UV	154
ZlXQX_hyperellpadicfrobenius	154
ZpXQXXQ_invsqrt	154
nfhyperellpadicfrobenius	154
get_extremal	210
FlxV_constant	273
Flx_difftable	273
Flx_genus2charpoly_naive	273
genus2_type5	350
hyperellextremalmodels	350
FpXXX_Fp_mul	441
FpXXX_red	441
ZpXQXXQ_sqr	448
Fq_diff_red	469
ZXC_to_padic	469
ZXX_to_FpXC	469
ZpXQXXQ_frob	469
genus2_eulerfact_semistable	532
genus2_redmodel	532
Zst_normval	588
Zst_red1	588
Zst_val	588
hyperellpadicfrobenius0	595
charpoly_funceq	679
hyperell_Weil_bound	686
genus2charpoly	889
genus2_eulerfact	945
hyperellcharpoly	1050
RgXY_swapsafe	1176
Zst_reduce	1176
ZM_to_padic	1309
ZlX_hyperellpadicfrobenius	1309
ZpXXQ_invsqrt	1309
get_UV	1309
hyperellpadicfrobenius	1309
ZpXQXXQ_mul	1358
FlxV_Fl2_eval_pre	1617
ZX_to_padic	1743
get_basis	1764
ZpXQXXQ_red	1806
FpXXX_renormalize	2247
xdminusone	2926
algo57bis	3080
next_model	3122
FpXXQ_sqr	3402
hyperellisoncurve	3493
frac_to_Fq	6573
ZX_hyperellred	8193
red_Cremona_Stoll	8193
ZC_to_padic	10094
ZpXXQ_frob	10094
diff_red	10094
revdigits	12026
polreduce	16386
FpXXQ_mul	16863
FpXXQ_red	20265
Fl2V_next	44898
minimalmodel_getH	50735
algo56	50798
hyperell_reverse	50826
algo51	50840
algo57	53031
hyperellminimalmodel	53045
minimalmodel_merge	53045
check_hyperell_Q	53087
check_hyperell_vc	65282
check_hyperell_Rg	65296
hyperellchangecurve	65296
algo52	103364
hyperell_redQ	106076
hyperelldisc	118964
get_ep	126586
frac_to_Fp	133847
test53	147393
ZX2_affine_unscale	163567
ZX2_unscale	169571
test55	189494
check_hyperell	289195
RgX_RgM2_eval	303747
to_ZX	1029007

Generated by: LCOV version 1.16