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 30551-f8501633d1) Lines: 1467 1530 95.9 % Date: 2025-11-20 09:22:21 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	5390
ZX_sturm	6395
fft2	7462
roots	8018
ZX_deg1root	15275
_sqrtnr	22710
polrootsbound_i	27293
polrootsbound	27300
RgX_normalize1	35900
ZX_realroots_irred	48654
realroots	50627
ZX_sturm_irred	116773
ZX_sturm_i	123168
polsolve	166721
split_pols	166722
splitcauchy	166729
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	267060
QX_complex_roots	296415
_gen_zero	326162
fix_roots1	398468
conformal_mapping	467927
split_1	467928
split_0_2	468289
split_0_1	468290
logradius	493975
update_radius	493979
parameters	493981
split_2	493982
optimize_split	493983
split_fromU	493983
split_0	494345
refine_F	502367
dft	502372
all_roots	536124
clean_roots	536171
a_posteriori_errors	537225
fix_roots	537225
mygprec_special	537231
logpre_modulus	606769
logmodulus	606773
abs_update_r	778680
ind_maxlog2	902655
isexactscalar	931714
isreal	961907
initdft	996353
dual_modulus	1012463
usp	1126092
ZX_sturmpart	1128277
check_ab	1178904
tocomplex	1213967
isvalidcoeff	1230235
ZX_Uspensky	1313921
conformal_basecase	1403894
conformal_pol	1404015
fujiwara_bound_real	1406960
split_complete	1525901
homothetie	1610107
append_clone	1614196
logmin_modulus	1614800
root_error	1912577
mygprecrc_special	2179210
ZX_rescale2prim	2233859
cmp_complex_appr	2238589
fujiwara_bound	2271820
checkbound	2354938
refine_H	2460485
scalepol	4289423
mygprec_absolute	4340008
_mp_mul	4374485
logmax_modulus	4450970
splitpoleval	5235816
bkeval_single_power	5235988
newton_polygon	5507386
X2XP1	5990599
_mp_sqr	6298459
dblexp	6549138
quicktofp	6979244
RgX_gtofp_bit	7031773
abs_update	8005181
mydbllogr	9546808
homothetie2n	9957918
_gen_nored	11200011
eval_rel_pol	13138418
fft	14159926
_gen_one	14473293
ZX_to_ZiX	16457477
pol_to_gaussint	17589383
_mp_add	24660411
_mp_cmul	34761743
myshiftrc	35507688
homothetie_gauss	36499826
lower_bound	40956698
findpower	40958492
graeffe	49507151
mydbllog2r	56183596
mygprec	63758586
ZiX_sqr	99039300
myshiftic	135806189
mygprecrc	215195392
mydbllog2i	226426046
dbllog2	302081566

Generated by: LCOV version 1.16