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 30592-30cd175d91) Lines: 1468 1530 95.9 % Date: 2026-01-03 09:20:22 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	15195
_sqrtnr	22589
polrootsbound_i	27125
polrootsbound	27132
RgX_normalize1	35733
ZX_realroots_irred	48558
realroots	50627
ZX_sturm_irred	116573
ZX_sturm_i	122967
split_pols	166679
polsolve	166690
splitcauchy	166694
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	266892
QX_complex_roots	296162
_gen_zero	325991
fix_roots1	398347
conformal_mapping	467776
split_1	467777
split_0_1	468138
split_0_2	468139
logradius	493820
update_radius	493824
parameters	493828
split_2	493828
optimize_split	493829
split_fromU	493829
split_0	494187
refine_F	502211
dft	502214
all_roots	535874
clean_roots	535921
fix_roots	536976
a_posteriori_errors	536977
mygprec_special	536980
logmodulus	606533
logpre_modulus	606535
abs_update_r	778538
ind_maxlog2	902402
isexactscalar	931714
isreal	961606
initdft	996042
dual_modulus	1012171
usp	1125986
ZX_sturmpart	1128291
check_ab	1178918
tocomplex	1213143
isvalidcoeff	1228149
ZX_Uspensky	1313794
conformal_basecase	1403442
conformal_pol	1403559
fujiwara_bound_real	1406747
split_complete	1525349
homothetie	1609590
append_clone	1613489
logmin_modulus	1614265
root_error	1911570
mygprecrc_special	2178230
ZX_rescale2prim	2233781
cmp_complex_appr	2237247
fujiwara_bound	2271038
checkbound	2354967
refine_H	2459867
scalepol	4288055
mygprec_absolute	4337364
_mp_mul	4374392
logmax_modulus	4449356
bkeval_single_power	5234023
splitpoleval	5234725
newton_polygon	5505088
X2XP1	5990379
_mp_sqr	6297893
dblexp	6547097
quicktofp	6976809
RgX_gtofp_bit	7028923
abs_update	8003378
mydbllogr	9544192
homothetie2n	9954133
_gen_nored	11196014
eval_rel_pol	13134074
fft	14154698
_gen_one	14468176
ZX_to_ZiX	16445616
pol_to_gaussint	17583383
_mp_add	24659602
_mp_cmul	34753016
myshiftrc	35493812
homothetie_gauss	36485326
lower_bound	40941757
findpower	40942160
graeffe	49493393
mydbllog2r	56167674
mygprec	63739509
ZiX_sqr	99001959
myshiftic	135781915
mygprecrc	215110362
mydbllog2i	226343234
dbllog2	301994843

Generated by: LCOV version 1.16