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 30759-17b423fb9b) Lines: 1467 1530 95.9 % Date: 2026-03-20 09:26:27 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	22594
polrootsbound_i	27097
polrootsbound	27104
RgX_normalize1	35705
ZX_realroots_irred	48571
realroots	50627
ZX_sturm_irred	116674
ZX_sturm_i	123069
polsolve	166706
split_pols	166710
splitcauchy	166712
solve_exact_pol	231495
cleanroots	231763
isexactpol	240103
roots_com	240103
roots_aux	240131
checkvalidpol	267214
QX_complex_roots	296305
_gen_zero	326005
fix_roots1	398789
split_1	468781
conformal_mapping	468782
split_0_1	469153
split_0_2	469154
logradius	494927
parameters	494929
optimize_split	494930
split_fromU	494930
update_radius	494930
split_2	494932
split_0	495300
refine_F	503321
dft	503323
all_roots	536361
clean_roots	536409
a_posteriori_errors	537463
fix_roots	537467
mygprec_special	537473
logmodulus	608201
logpre_modulus	608204
abs_update_r	780115
ind_maxlog2	904371
isexactscalar	934017
isreal	963711
initdft	998253
dual_modulus	1014495
usp	1126176
ZX_sturmpart	1128335
check_ab	1178962
tocomplex	1215856
isvalidcoeff	1230445
ZX_Uspensky	1313933
conformal_basecase	1406464
conformal_pol	1406582
fujiwara_bound_real	1407002
split_complete	1528065
homothetie	1613572
append_clone	1616151
logmin_modulus	1617709
root_error	1914414
mygprecrc_special	2181397
ZX_rescale2prim	2233970
cmp_complex_appr	2241403
fujiwara_bound	2272038
checkbound	2355054
refine_H	2464613
scalepol	4297395
mygprec_absolute	4344114
_mp_mul	4374558
logmax_modulus	4458662
bkeval_single_power	5235457
splitpoleval	5236325
newton_polygon	5520575
X2XP1	5991036
_mp_sqr	6298506
dblexp	6562522
quicktofp	6981467
RgX_gtofp_bit	7047925
abs_update	8021453
mydbllogr	9565927
homothetie2n	9978868
_gen_nored	11207595
eval_rel_pol	13168505
fft	14194393
_gen_one	14474852
ZX_to_ZiX	16491768
pol_to_gaussint	17627116
_mp_add	24664376
_mp_cmul	34777094
myshiftrc	35576056
homothetie_gauss	36562152
findpower	41029752
lower_bound	41030552
graeffe	49605096
mydbllog2r	57611095
mygprec	63864006
ZiX_sqr	99223991
myshiftic	136125861
mygprecrc	215569110
mydbllog2i	226882523
dbllog2	304058935

Generated by: LCOV version 1.16