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 30613-2b070936c6) Lines: 1467 1530 95.9 % Date: 2026-01-15 09:21:54 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	5390
ZX_sturm	6395
fft2	7462
roots	8018
ZX_deg1root	15201
_sqrtnr	22592
polrootsbound_i	27125
polrootsbound	27132
RgX_normalize1	35733
ZX_realroots_irred	48565
realroots	50627
ZX_sturm_irred	116575
ZX_sturm_i	122970
split_pols	166682
polsolve	166688
splitcauchy	166696
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	266892
QX_complex_roots	296163
_gen_zero	325975
fix_roots1	398349
conformal_mapping	467786
split_1	467788
split_0_2	468150
split_0_1	468151
logradius	493836
split_2	493836
parameters	493837
optimize_split	493838
split_fromU	493838
update_radius	493838
split_0	494199
refine_F	502222
dft	502225
all_roots	535867
clean_roots	535921
fix_roots	536976
a_posteriori_errors	536977
mygprec_special	536982
logmodulus	606540
logpre_modulus	606542
abs_update_r	778527
ind_maxlog2	902435
isexactscalar	931714
isreal	961626
initdft	996061
dual_modulus	1012184
usp	1125944
ZX_sturmpart	1128250
check_ab	1178877
tocomplex	1213162
isvalidcoeff	1228149
ZX_Uspensky	1313752
conformal_basecase	1403481
conformal_pol	1403600
fujiwara_bound_real	1406728
split_complete	1525376
homothetie	1609609
append_clone	1613500
logmin_modulus	1614347
root_error	1911598
mygprecrc_special	2178257
ZX_rescale2prim	2233579
cmp_complex_appr	2237238
fujiwara_bound	2271029
checkbound	2354884
refine_H	2459914
scalepol	4288159
mygprec_absolute	4337458
_mp_mul	4374475
logmax_modulus	4449520
bkeval_single_power	5234343
splitpoleval	5235052
newton_polygon	5505194
X2XP1	5989926
_mp_sqr	6298132
dblexp	6547214
quicktofp	6976795
RgX_gtofp_bit	7028979
abs_update	8003417
mydbllogr	9544243
homothetie2n	9954380
_gen_nored	11198122
eval_rel_pol	13134291
fft	14154564
_gen_one	14470012
ZX_to_ZiX	16448527
pol_to_gaussint	17583692
_mp_add	24661750
_mp_cmul	34759004
myshiftrc	35495044
homothetie_gauss	36486836
lower_bound	40943806
findpower	40944380
graeffe	49496159
mydbllog2r	56170335
mygprec	63740732
ZiX_sqr	99005240
myshiftic	135804541
mygprecrc	215121281
mydbllog2i	226363453
dbllog2	302027540

Generated by: LCOV version 1.16