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 30773-2078653b96) Lines: 1467 1530 95.9 % Date: 2026-03-30 09:27:24 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	15205
_sqrtnr	22597
polrootsbound_i	27097
polrootsbound	27104
RgX_normalize1	35705
ZX_realroots_irred	48576
realroots	50627
ZX_sturm_irred	116678
ZX_sturm_i	123073
polsolve	166705
split_pols	166707
splitcauchy	166714
solve_exact_pol	231495
cleanroots	231763
isexactpol	240103
roots_com	240103
roots_aux	240131
checkvalidpol	267214
QX_complex_roots	296306
_gen_zero	326041
fix_roots1	398789
conformal_mapping	468783
split_1	468784
split_0_1	469151
split_0_2	469152
logradius	494926
update_radius	494928
parameters	494930
optimize_split	494931
split_2	494931
split_fromU	494931
split_0	495299
refine_F	503318
dft	503321
all_roots	536366
clean_roots	536414
a_posteriori_errors	537468
fix_roots	537470
mygprec_special	537474
logmodulus	608215
logpre_modulus	608218
abs_update_r	780128
ind_maxlog2	904344
isexactscalar	934017
isreal	963715
initdft	998249
dual_modulus	1014479
usp	1126181
ZX_sturmpart	1128336
check_ab	1178963
tocomplex	1215869
isvalidcoeff	1230445
ZX_Uspensky	1313940
conformal_basecase	1406459
conformal_pol	1406577
fujiwara_bound_real	1407009
split_complete	1528064
homothetie	1613558
append_clone	1616160
logmin_modulus	1617700
root_error	1914396
mygprecrc_special	2181413
ZX_rescale2prim	2233997
cmp_complex_appr	2241466
fujiwara_bound	2272050
checkbound	2355056
refine_H	2464595
scalepol	4297388
mygprec_absolute	4344196
_mp_mul	4374481
logmax_modulus	4458643
splitpoleval	5235825
bkeval_single_power	5236028
newton_polygon	5520747
X2XP1	5991073
_mp_sqr	6298657
dblexp	6562464
quicktofp	6981626
RgX_gtofp_bit	7048045
abs_update	8020904
mydbllogr	9565238
homothetie2n	9979021
_gen_nored	11201549
eval_rel_pol	13168439
fft	14193956
_gen_one	14473878
ZX_to_ZiX	16491106
pol_to_gaussint	17627103
_mp_add	24661864
_mp_cmul	34765189
myshiftrc	35576890
homothetie_gauss	36566007
lower_bound	41030180
findpower	41030587
graeffe	49604443
mydbllog2r	57612208
mygprec	63862724
ZiX_sqr	99231865
myshiftic	136079648
mygprecrc	215574331
mydbllog2i	226871950
dbllog2	304009177

Generated by: LCOV version 1.16