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 30802-b11b770002) Lines: 1467 1530 95.9 % Date: 2026-04-11 09:26:21 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	15201
_sqrtnr	22592
polrootsbound_i	27097
polrootsbound	27104
RgX_normalize1	35705
ZX_realroots_irred	48567
realroots	50627
ZX_sturm_irred	116671
ZX_sturm_i	123066
polsolve	166703
split_pols	166703
splitcauchy	166710
solve_exact_pol	231495
cleanroots	231763
isexactpol	240103
roots_com	240103
roots_aux	240131
checkvalidpol	267214
QX_complex_roots	296307
_gen_zero	325980
fix_roots1	398789
split_1	468783
conformal_mapping	468785
split_0_1	469155
split_0_2	469155
logradius	494931
optimize_split	494935
split_2	494935
parameters	494936
split_fromU	494936
update_radius	494936
split_0	495308
refine_F	503325
dft	503328
all_roots	536368
clean_roots	536408
fix_roots	537469
a_posteriori_errors	537470
mygprec_special	537475
logmodulus	608221
logpre_modulus	608223
abs_update_r	780135
ind_maxlog2	904367
isexactscalar	934017
isreal	963719
initdft	998262
dual_modulus	1014493
usp	1126040
ZX_sturmpart	1128221
check_ab	1178789
tocomplex	1215871
isvalidcoeff	1230445
ZX_Uspensky	1313821
conformal_basecase	1406474
conformal_pol	1406593
fujiwara_bound_real	1406889
split_complete	1528086
homothetie	1613582
append_clone	1616173
logmin_modulus	1617740
root_error	1914391
mygprecrc_special	2181419
ZX_rescale2prim	2233759
cmp_complex_appr	2241481
fujiwara_bound	2271929
checkbound	2354828
refine_H	2464615
scalepol	4297436
mygprec_absolute	4344162
_mp_mul	4374504
logmax_modulus	4458718
bkeval_single_power	5235346
splitpoleval	5235592
newton_polygon	5520748
X2XP1	5990499
_mp_sqr	6298308
dblexp	6562568
quicktofp	6981194
RgX_gtofp_bit	7048110
abs_update	8020970
mydbllogr	9565365
homothetie2n	9979116
_gen_nored	11199443
eval_rel_pol	13168602
fft	14194561
_gen_one	14471745
ZX_to_ZiX	16492280
pol_to_gaussint	17627290
_mp_add	24661823
_mp_cmul	34760006
myshiftrc	35577443
homothetie_gauss	36563354
lower_bound	41030817
findpower	41030929
graeffe	49604356
mydbllog2r	57612533
mygprec	63862483
ZiX_sqr	99226901
myshiftic	136080442
mygprecrc	215565823
mydbllog2i	226862228
dbllog2	304008948

Generated by: LCOV version 1.16