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 30587-f85873d515) Lines: 1467 1530 95.9 % Date: 2025-12-27 09:21:13 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	15193
_sqrtnr	22588
polrootsbound_i	27125
polrootsbound	27132
RgX_normalize1	35733
ZX_realroots_irred	48544
realroots	50627
ZX_sturm_irred	116553
ZX_sturm_i	122947
polsolve	166661
split_pols	166667
splitcauchy	166678
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	266892
QX_complex_roots	296159
_gen_zero	325887
fix_roots1	398353
conformal_mapping	467795
split_1	467797
split_0_2	468157
split_0_1	468158
parameters	493849
update_radius	493849
logradius	493850
split_2	493850
split_fromU	493850
optimize_split	493852
split_0	494215
dft	502237
refine_F	502238
all_roots	535871
clean_roots	535917
a_posteriori_errors	536966
fix_roots	536976
mygprec_special	536981
logpre_modulus	606541
logmodulus	606544
abs_update_r	778526
ind_maxlog2	902440
isexactscalar	931714
isreal	961646
initdft	996088
dual_modulus	1012203
usp	1125850
ZX_sturmpart	1128155
check_ab	1178782
tocomplex	1213135
isvalidcoeff	1228149
ZX_Uspensky	1313621
conformal_basecase	1403500
conformal_pol	1403621
fujiwara_bound_real	1406582
split_complete	1525396
homothetie	1609623
append_clone	1613496
logmin_modulus	1614415
root_error	1911585
mygprecrc_special	2178260
ZX_rescale2prim	2233509
cmp_complex_appr	2237222
fujiwara_bound	2270863
checkbound	2354694
refine_H	2459966
scalepol	4288236
mygprec_absolute	4337270
_mp_mul	4374394
logmax_modulus	4449696
bkeval_single_power	5233042
splitpoleval	5233703
newton_polygon	5505183
X2XP1	5989654
_mp_sqr	6297442
dblexp	6547329
quicktofp	6976258
RgX_gtofp_bit	7028954
abs_update	8003791
mydbllogr	9544850
homothetie2n	9954554
_gen_nored	11195223
eval_rel_pol	13134306
fft	14155245
_gen_one	14465814
ZX_to_ZiX	16451926
pol_to_gaussint	17583954
_mp_add	24657109
_mp_cmul	34751761
myshiftrc	35495793
homothetie_gauss	36488091
findpower	40946742
lower_bound	40946742
graeffe	49495680
mydbllog2r	56170967
mygprec	63741743
ZiX_sqr	99012423
myshiftic	135790432
mygprecrc	215124248
mydbllog2i	226381473
dbllog2	302045653

Generated by: LCOV version 1.16