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 30748-2ce22a5f1f) Lines: 1467 1530 95.9 % Date: 2026-03-18 09:25:54 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296305
RgX_gtofp_bit	7048101
RgX_normalize1	35705
X2XP1	5990771
ZX_Uspensky	1313840
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15199
ZX_graeffe	5439
ZX_realroots_irred	48568
ZX_rescale2prim	2233894
ZX_sturm	6395
ZX_sturm_i	123068
ZX_sturm_irred	116673
ZX_sturmpart	1128239
ZX_to_ZiX	16492392
ZiX_sqr	99229579
_gen_nored	11203013
_gen_one	14471962
_gen_zero	325988
_intervalcmp	0
_mp_add	24662146
_mp_cmul	34765563
_mp_mul	4374574
_mp_sqr	6298291
_mp_sub	0
_sqrtnr	22592
a_posteriori_errors	537466
abs_update	8021475
abs_update_r	780129
all_roots	536367
append_clone	1616160
bkeval_single_power	5235047
check_ab	1178867
checkbound	2354863
checkvalidpol	267214
clean_roots	536412
cleanroots	231763
cmp_complex_appr	2241498
conformal_basecase	1406468
conformal_mapping	468783
conformal_pol	1406588
dblexp	6562643
dbllog2	304060154
dft	503326
dual_modulus	1014495
eval_rel_pol	13168533
fft	14194766
fft2	7462
findpower	41028428
fix_roots	537465
fix_roots1	398785
fujiwara_bound	2271936
fujiwara_bound_real	1406915
graeffe	49606545
homothetie	1613581
homothetie2n	9979058
homothetie_gauss	36563411
ind_maxlog2	904364
initdft	998257
isexactpol	240103
isexactscalar	934017
isreal	963713
isvalidcoeff	1230445
logmax_modulus	4458648
logmin_modulus	1617711
logmodulus	608223
logpre_modulus	608221
logradius	494926
lower_bound	41028815
mydbllog2i	226878007
mydbllog2r	57611534
mydbllogr	9565945
mygprec	63864956
mygprec_absolute	4344091
mygprec_special	537473
mygprecrc	215574590
mygprecrc_special	2181407
myshiftic	136125875
myshiftrc	35577292
newton_polygon	5520757
optimize_split	494933
parameters	494926
pol_to_gaussint	17627070
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166695
quicktofp	6981200
realroots	50627
refine_F	503319
refine_H	2464617
root_error	1914404
roots	8368
roots_aux	240131
roots_com	240103
rootsdeg0	42
scalepol	4297425
scalepol2n	0
sol_ok	3378
solve_exact_pol	231495
split_0	495303
split_0_1	469150
split_0_2	469151
split_1	468781
split_2	494932
split_complete	1528072
split_fromU	494931
split_pols	166695
splitcauchy	166711
splitpoleval	5235606
tocomplex	1215882
update_radius	494930
usp	1126071

Generated by: LCOV version 1.16