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 30600-bbb75e9497) Lines: 1467 1530 95.9 % Date: 2026-01-05 09:22:13 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	5390
ZX_sturm	6395
fft2	7462
roots	8018
ZX_deg1root	15205
_sqrtnr	22596
polrootsbound_i	27123
polrootsbound	27130
RgX_normalize1	35731
ZX_realroots_irred	48567
realroots	50627
ZX_sturm_irred	116577
ZX_sturm_i	122972
polsolve	166691
split_pols	166692
splitcauchy	166696
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	266890
QX_complex_roots	296159
_gen_zero	326017
fix_roots1	398348
conformal_mapping	467777
split_1	467782
split_0_1	468141
split_0_2	468141
logradius	493833
update_radius	493833
parameters	493834
split_2	493834
split_fromU	493834
optimize_split	493835
split_0	494198
refine_F	502217
dft	502225
all_roots	535873
clean_roots	535919
fix_roots	536969
a_posteriori_errors	536971
mygprec_special	536981
logpre_modulus	606542
logmodulus	606545
abs_update_r	778534
ind_maxlog2	902407
isexactscalar	931714
isreal	961613
initdft	996059
dual_modulus	1012161
usp	1125904
ZX_sturmpart	1128202
check_ab	1178830
tocomplex	1213105
isvalidcoeff	1228143
ZX_Uspensky	1313702
conformal_basecase	1403459
conformal_pol	1403577
fujiwara_bound_real	1406693
split_complete	1525366
homothetie	1609587
append_clone	1613499
logmin_modulus	1614314
root_error	1911559
mygprecrc_special	2178251
ZX_rescale2prim	2233508
cmp_complex_appr	2237230
fujiwara_bound	2270994
checkbound	2354790
refine_H	2459871
scalepol	4288080
mygprec_absolute	4337380
_mp_mul	4374391
logmax_modulus	4449447
splitpoleval	5235170
bkeval_single_power	5235185
newton_polygon	5505229
X2XP1	5989711
_mp_sqr	6298066
dblexp	6547116
quicktofp	6976698
RgX_gtofp_bit	7028988
abs_update	8003040
mydbllogr	9543702
homothetie2n	9954381
_gen_nored	11199369
eval_rel_pol	13134009
fft	14154581
_gen_one	14471676
ZX_to_ZiX	16448947
pol_to_gaussint	17583504
_mp_add	24660030
_mp_cmul	34760471
myshiftrc	35495105
homothetie_gauss	36490064
lower_bound	40944706
findpower	40944872
graeffe	49496590
mydbllog2r	56169478
mygprec	63739356
ZiX_sqr	99010898
myshiftic	135786783
mygprecrc	215120759
mydbllog2i	226377578
dbllog2	302026283

Generated by: LCOV version 1.16