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 - rootpol.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30786-ffec283a2b) Lines: 1467 1530 95.9 % Date: 2026-04-08 09:25:27 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
_intervalcmp	0
_mp_sub	0
scalepol2n	0
ZX_Uspensky_equal_yes	14
polgraeffe	14
ZX_Uspensky_no	21
ZX_Uspensky_equal	28
rootsdeg0	42
FFT	56
FFTinv	56
polmod_to_embed	84
FFT_i	98
sol_ok	3378
ZX_graeffe	5439
ZX_sturm	6395
fft2	7462
roots	8368
ZX_deg1root	15199
_sqrtnr	22593
polrootsbound_i	27096
polrootsbound	27103
RgX_normalize1	35704
ZX_realroots_irred	48568
realroots	50627
ZX_sturm_irred	116672
ZX_sturm_i	123066
polsolve	166698
split_pols	166699
splitcauchy	166701
solve_exact_pol	231495
cleanroots	231763
isexactpol	240103
roots_com	240103
roots_aux	240131
checkvalidpol	267213
QX_complex_roots	296311
_gen_zero	325974
fix_roots1	398790
conformal_mapping	468786
split_1	468786
split_0_1	469152
split_0_2	469152
logradius	494933
split_2	494937
update_radius	494938
parameters	494940
optimize_split	494941
split_fromU	494941
split_0	495309
refine_F	503328
dft	503333
all_roots	536362
clean_roots	536409
fix_roots	537471
a_posteriori_errors	537473
mygprec_special	537474
logpre_modulus	608232
logmodulus	608234
abs_update_r	780142
ind_maxlog2	904375
isexactscalar	934017
isreal	963727
initdft	998273
dual_modulus	1014507
usp	1126079
ZX_sturmpart	1128280
check_ab	1178907
tocomplex	1215874
isvalidcoeff	1230438
ZX_Uspensky	1313878
conformal_basecase	1406477
conformal_pol	1406598
fujiwara_bound_real	1406944
split_complete	1528090
homothetie	1613603
append_clone	1616176
logmin_modulus	1617725
root_error	1914423
mygprecrc_special	2181424
ZX_rescale2prim	2233836
cmp_complex_appr	2241494
fujiwara_bound	2271979
checkbound	2354944
refine_H	2464611
scalepol	4297458
mygprec_absolute	4344086
_mp_mul	4374426
logmax_modulus	4458684
bkeval_single_power	5234487
splitpoleval	5234705
newton_polygon	5520756
X2XP1	5990642
_mp_sqr	6298162
dblexp	6562676
quicktofp	6981342
RgX_gtofp_bit	7048143
abs_update	8020871
mydbllogr	9565539
homothetie2n	9979075
_gen_nored	11198872
eval_rel_pol	13168576
fft	14194689
_gen_one	14468956
ZX_to_ZiX	16491087
pol_to_gaussint	17627142
_mp_add	24659612
_mp_cmul	34757776
myshiftrc	35577574
homothetie_gauss	36562197
lower_bound	41025523
findpower	41026272
graeffe	49602653
mydbllog2r	57611579
mygprec	63861772
ZiX_sqr	99218795
myshiftic	136066795
mygprecrc	215554237
mydbllog2i	226844011
dbllog2	303983151

Generated by: LCOV version 1.16