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
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296163
RgX_gtofp_bit	7028979
RgX_normalize1	35733
X2XP1	5989926
ZX_Uspensky	1313752
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15201
ZX_graeffe	5390
ZX_realroots_irred	48565
ZX_rescale2prim	2233579
ZX_sturm	6395
ZX_sturm_i	122970
ZX_sturm_irred	116575
ZX_sturmpart	1128250
ZX_to_ZiX	16448527
ZiX_sqr	99005240
_gen_nored	11198122
_gen_one	14470012
_gen_zero	325975
_intervalcmp	0
_mp_add	24661750
_mp_cmul	34759004
_mp_mul	4374475
_mp_sqr	6298132
_mp_sub	0
_sqrtnr	22592
a_posteriori_errors	536977
abs_update	8003417
abs_update_r	778527
all_roots	535867
append_clone	1613500
bkeval_single_power	5234343
check_ab	1178877
checkbound	2354884
checkvalidpol	266892
clean_roots	535921
cleanroots	231763
cmp_complex_appr	2237238
conformal_basecase	1403481
conformal_mapping	467786
conformal_pol	1403600
dblexp	6547214
dbllog2	302027540
dft	502225
dual_modulus	1012184
eval_rel_pol	13134291
fft	14154564
fft2	7462
findpower	40944380
fix_roots	536976
fix_roots1	398349
fujiwara_bound	2271029
fujiwara_bound_real	1406728
graeffe	49496159
homothetie	1609609
homothetie2n	9954380
homothetie_gauss	36486836
ind_maxlog2	902435
initdft	996061
isexactpol	239753
isexactscalar	931714
isreal	961626
isvalidcoeff	1228149
logmax_modulus	4449520
logmin_modulus	1614347
logmodulus	606540
logpre_modulus	606542
logradius	493836
lower_bound	40943806
mydbllog2i	226363453
mydbllog2r	56170335
mydbllogr	9544243
mygprec	63740732
mygprec_absolute	4337458
mygprec_special	536982
mygprecrc	215121281
mygprecrc_special	2178257
myshiftic	135804541
myshiftrc	35495044
newton_polygon	5505194
optimize_split	493838
parameters	493837
pol_to_gaussint	17583692
polgraeffe	14
polmod_to_embed	84
polrootsbound	27132
polrootsbound_i	27125
polsolve	166688
quicktofp	6976795
realroots	50627
refine_F	502222
refine_H	2459914
root_error	1911598
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288159
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494199
split_0_1	468151
split_0_2	468150
split_1	467788
split_2	493836
split_complete	1525376
split_fromU	493838
split_pols	166682
splitcauchy	166696
splitpoleval	5235052
tocomplex	1213162
update_radius	493838
usp	1125944

Generated by: LCOV version 1.16