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 30734-f1f26dedcb) Lines: 1467 1530 95.9 % Date: 2026-03-05 09:24:39 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	8018
ZX_deg1root	15204
_sqrtnr	22597
polrootsbound_i	27097
polrootsbound	27104
RgX_normalize1	35705
ZX_realroots_irred	48575
realroots	50627
ZX_sturm_irred	116677
ZX_sturm_i	123072
polsolve	166702
split_pols	166707
splitcauchy	166713
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	266864
QX_complex_roots	296307
_gen_zero	326016
fix_roots1	398478
conformal_mapping	468055
split_1	468055
split_0_1	468417
split_0_2	468417
logradius	494141
optimize_split	494148
parameters	494148
split_2	494148
split_fromU	494148
update_radius	494148
split_0	494512
refine_F	502529
dft	502532
all_roots	536018
clean_roots	536060
a_posteriori_errors	537113
fix_roots	537116
mygprec_special	537122
logpre_modulus	607089
logmodulus	607093
abs_update_r	779104
ind_maxlog2	903052
isexactscalar	931714
isreal	962202
initdft	996680
dual_modulus	1012840
usp	1126157
ZX_sturmpart	1128343
check_ab	1178970
tocomplex	1213840
isvalidcoeff	1228065
ZX_Uspensky	1313947
conformal_basecase	1404284
conformal_pol	1404403
fujiwara_bound_real	1407013
split_complete	1526138
homothetie	1610802
append_clone	1614329
logmin_modulus	1615182
root_error	1912459
mygprecrc_special	2179222
ZX_rescale2prim	2233878
cmp_complex_appr	2238479
fujiwara_bound	2271703
checkbound	2355070
refine_H	2461213
scalepol	4290691
mygprec_absolute	4339599
_mp_mul	4374649
logmax_modulus	4451809
bkeval_single_power	5236241
splitpoleval	5236299
newton_polygon	5510510
X2XP1	5990828
_mp_sqr	6298688
dblexp	6551657
quicktofp	6979525
RgX_gtofp_bit	7035344
abs_update	8008792
mydbllogr	9550501
homothetie2n	9962061
_gen_nored	11208303
eval_rel_pol	13144932
fft	14165361
_gen_one	14475784
ZX_to_ZiX	16452625
pol_to_gaussint	17596698
_mp_add	24664676
_mp_cmul	34778427
myshiftrc	35519161
homothetie_gauss	36509170
findpower	40967218
lower_bound	40967311
graeffe	49529580
mydbllog2r	56190415
mygprec	63778113
ZiX_sqr	99072442
myshiftic	135908180
mygprecrc	215237101
mydbllog2i	226525174
dbllog2	302227293

Generated by: LCOV version 1.16