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 30809-023acc7158) Lines: 1467 1530 95.9 % Date: 2026-04-13 09:26:12 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	15204
_sqrtnr	22597
polrootsbound_i	27097
polrootsbound	27104
RgX_normalize1	35705
ZX_realroots_irred	48574
realroots	50627
ZX_sturm_irred	116677
ZX_sturm_i	123072
polsolve	166703
split_pols	166705
splitcauchy	166711
solve_exact_pol	231495
cleanroots	231763
isexactpol	240103
roots_com	240103
roots_aux	240131
checkvalidpol	267214
QX_complex_roots	296306
_gen_zero	326011
fix_roots1	398789
conformal_mapping	468773
split_1	468776
split_0_1	469145
split_0_2	469145
logradius	494918
update_radius	494919
parameters	494920
optimize_split	494921
split_2	494921
split_fromU	494921
split_0	495293
refine_F	503316
dft	503318
all_roots	536363
clean_roots	536410
a_posteriori_errors	537466
fix_roots	537467
mygprec_special	537469
logpre_modulus	608222
logmodulus	608224
abs_update_r	780151
ind_maxlog2	904320
isexactscalar	934017
isreal	963696
initdft	998238
dual_modulus	1014469
usp	1126132
ZX_sturmpart	1128314
check_ab	1178941
tocomplex	1215863
isvalidcoeff	1230445
ZX_Uspensky	1313916
conformal_basecase	1406441
conformal_pol	1406560
fujiwara_bound_real	1406993
split_complete	1528047
homothetie	1613554
append_clone	1616158
logmin_modulus	1617654
root_error	1914397
mygprecrc_special	2181403
ZX_rescale2prim	2233944
cmp_complex_appr	2241515
fujiwara_bound	2272867
checkbound	2355012
refine_H	2464549
scalepol	4297326
mygprec_absolute	4344134
_mp_mul	4374506
logmax_modulus	4458511
bkeval_single_power	5235138
splitpoleval	5235366
newton_polygon	5520794
X2XP1	5990904
_mp_sqr	6298441
dblexp	6562479
quicktofp	6984367
RgX_gtofp_bit	7048129
abs_update	8020828
mydbllogr	9565428
homothetie2n	9978852
_gen_nored	11201618
eval_rel_pol	13168315
fft	14194480
_gen_one	14471953
ZX_to_ZiX	16486312
pol_to_gaussint	17626798
_mp_add	24661394
_mp_cmul	34765053
myshiftrc	35576416
homothetie_gauss	36560852
lower_bound	41025975
findpower	41027220
graeffe	49598576
mydbllog2r	57612204
mygprec	63860337
ZiX_sqr	99219656
myshiftic	136064475
mygprecrc	215549364
mydbllog2i	226751452
dbllog2	303886986

Generated by: LCOV version 1.16