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) Coverage Total Hit Test: PARI/GP v2.18.1 lcov report (development 31041-bd73e9fcdd) Lines: 96.9 % 1606 1556 Test Date: 2026-07-22 22:45:42 Functions: 99.3 % 135 134 Legend: Lines:     hit not hit

Function Name	Hit count
get_extremal_odd	0
hyperellextremalmodels	7
genus2_red5	14
hyperellminimaldisc	14
is_sing	14
redqfbsplit	35
hyperellred	42
hyperellchangecompose	63
hyperellchangepointinv	70
hyperellordinate	70
Zst_red3	77
genus2_halfstablemodel	77
genus2_halfstablemodel_i	77
hyperellisisom	84
hyperellisoncurve	84
ZXM_to_padic	147
Fq_get_UV	154
ZlXQX_hyperellpadicfrobenius	154
ZpXQXXQ_invsqrt	154
nfhyperellpadicfrobenius	154
hyperellauto	168
genus2_red2	217
nfhyperellisisom	252
hyperellchangepoint	259
nfM_primpart	322
wprojtoaff	329
F2x_genus2charpoly_naive	392
checkhyperellpt_i	413
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
hyperellisisom_M0	539
hyperellisisom_gen	539
vecan_genus2	553
random_SL2	574
get_extremal_even	581
Zst_normval	588
Zst_red1	588
Zst_val	588
hyperellpadicfrobenius0	595
ellfromeqncharpoly	637
algo52_F4	651
cf	651
cfu	651
genus2_tr2	651
charpoly_funceq	679
hyperell_Weil_bound	686
ftrans	721
genus2_type5ns	819
F2xqX_quad_nbroots	896
F2x_genus_red	938
genus2_eulerfact2_semistable	938
genus2_eulerfact_semistable	1015
genus2_redmodel	1015
F2x_genus2_find_trans	1106
genus2_eulerfact2	1127
genus2_type5ns_2	1127
RgXY_swapsafe	1176
Zst_reduce	1176
ZM_to_padic	1309
ZlX_hyperellpadicfrobenius	1309
ZpXXQ_invsqrt	1309
get_UV	1309
hyperellpadicfrobenius	1309
algo56bis	1351
ZpXQXXQ_mul	1358
genus2_eulerfact	1442
ZX_apolar	1505
F2x_genus2_trans	1547
hyperellextremalmodels_i	1715
RgX_remswap	1722
hyperellextremalmodels_nb	1722
ZX_to_padic	1743
get_basis	1764
ZpXQXXQ_red	1806
genus2charpoly	1806
F2x_pseudodisc	1834
checkisom	2107
FpXXX_renormalize	2247
RgX_hom_evaly	2331
hyperellchangevar	2681
F2x_genus_redoo	2814
FpXXQ_sqr	3402
algo57bis	3563
hyperelldegree	3759
next_model	4914
frac_to_Fq	6573
ZX_hyperellred	8193
red_Cremona_Stoll	8193
dirgenus2_worker	8462
xdminusone	8834
ZC_to_padic	10094
ZpXXQ_frob	10094
diff_red	10094
revdigits	12026
polreduce	16386
FpXXQ_mul	16863
FlxV_constant	19544
Flx_difftable	19544
Flx_genus2charpoly_naive	19544
FpXXQ_red	20265
hyperellcharpoly	20629
hyperellchangeinvert	43561
hyperellisom_finalize	52219
algo56	54004
hyperell_reverse	54907
algo51	55355
algo57	56251
hyperellminimalmodel	56265
minimalmodel_merge	56265
check_hyperell_Q	56307
Flx_difftable_constant	94218
Flx_genus2trace_naive	94224
dirgenus2	98321
hyperellchangecurve	110509
algo52	111190
hyperell_redQ	112516
hyperelldisc	122534
frac_to_Fp	133847
get_ep	136183
test53	152517
check_hyperell_vc	154511
check_hyperell_Rg	155078
ZX2_affine_unscale	173325
ZX2_unscale	180246
test55	202829
check_hyperell	409364
hyperellgenus	544674
FlxV_Fl2_eval_pre	766955
to_ZX	1029749
Fl2V_next	97965182

Generated by: LCOV version 2.0-1