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 30775-9d8a55740a) Lines: 1467 1530 95.9 % Date: 2026-04-06 09:26:18 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	15204
_sqrtnr	22596
polrootsbound_i	27097
polrootsbound	27104
RgX_normalize1	35705
ZX_realroots_irred	48569
realroots	50627
ZX_sturm_irred	116674
ZX_sturm_i	123069
polsolve	166695
split_pols	166699
splitcauchy	166710
solve_exact_pol	231495
cleanroots	231763
isexactpol	240103
roots_com	240103
roots_aux	240131
checkvalidpol	267214
QX_complex_roots	296313
_gen_zero	325949
fix_roots1	398787
conformal_mapping	468773
split_1	468774
split_0_1	469144
split_0_2	469144
logradius	494918
split_2	494919
update_radius	494920
parameters	494921
optimize_split	494923
split_fromU	494923
split_0	495293
refine_F	503309
dft	503316
all_roots	536368
clean_roots	536415
fix_roots	537467
a_posteriori_errors	537468
mygprec_special	537476
logpre_modulus	608208
logmodulus	608212
abs_update_r	780142
ind_maxlog2	904341
isexactscalar	934017
isreal	963695
initdft	998237
dual_modulus	1014471
usp	1126055
ZX_sturmpart	1128191
check_ab	1178817
tocomplex	1215871
isvalidcoeff	1230445
ZX_Uspensky	1313780
conformal_basecase	1406436
conformal_pol	1406551
fujiwara_bound_real	1406862
split_complete	1528056
homothetie	1613545
append_clone	1616155
logmin_modulus	1617640
root_error	1914420
mygprecrc_special	2181405
ZX_rescale2prim	2233817
cmp_complex_appr	2241474
fujiwara_bound	2271894
checkbound	2354764
refine_H	2464551
scalepol	4297337
mygprec_absolute	4344138
_mp_mul	4374428
logmax_modulus	4458496
splitpoleval	5234766
bkeval_single_power	5234860
newton_polygon	5520702
X2XP1	5990530
_mp_sqr	6298120
dblexp	6562411
quicktofp	6981192
RgX_gtofp_bit	7047986
abs_update	8020738
mydbllogr	9565235
homothetie2n	9978792
_gen_nored	11200178
eval_rel_pol	13168243
fft	14193661
_gen_one	14468771
ZX_to_ZiX	16487432
pol_to_gaussint	17626667
_mp_add	24660497
_mp_cmul	34761345
myshiftrc	35575672
homothetie_gauss	36560106
lower_bound	41025959
findpower	41026539
graeffe	49597689
mydbllog2r	57609833
mygprec	63860800
ZiX_sqr	99215771
myshiftic	136075717
mygprecrc	215546514
mydbllog2i	226835529
dbllog2	303973645

Generated by: LCOV version 1.16