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 30775-9d8a55740a) Lines: 1467 1530 95.9 % Date: 2026-04-06 09:26:18 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296313
RgX_gtofp_bit	7047986
RgX_normalize1	35705
X2XP1	5990530
ZX_Uspensky	1313780
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15204
ZX_graeffe	5439
ZX_realroots_irred	48569
ZX_rescale2prim	2233817
ZX_sturm	6395
ZX_sturm_i	123069
ZX_sturm_irred	116674
ZX_sturmpart	1128191
ZX_to_ZiX	16487432
ZiX_sqr	99215771
_gen_nored	11200178
_gen_one	14468771
_gen_zero	325949
_intervalcmp	0
_mp_add	24660497
_mp_cmul	34761345
_mp_mul	4374428
_mp_sqr	6298120
_mp_sub	0
_sqrtnr	22596
a_posteriori_errors	537468
abs_update	8020738
abs_update_r	780142
all_roots	536368
append_clone	1616155
bkeval_single_power	5234860
check_ab	1178817
checkbound	2354764
checkvalidpol	267214
clean_roots	536415
cleanroots	231763
cmp_complex_appr	2241474
conformal_basecase	1406436
conformal_mapping	468773
conformal_pol	1406551
dblexp	6562411
dbllog2	303973645
dft	503316
dual_modulus	1014471
eval_rel_pol	13168243
fft	14193661
fft2	7462
findpower	41026539
fix_roots	537467
fix_roots1	398787
fujiwara_bound	2271894
fujiwara_bound_real	1406862
graeffe	49597689
homothetie	1613545
homothetie2n	9978792
homothetie_gauss	36560106
ind_maxlog2	904341
initdft	998237
isexactpol	240103
isexactscalar	934017
isreal	963695
isvalidcoeff	1230445
logmax_modulus	4458496
logmin_modulus	1617640
logmodulus	608212
logpre_modulus	608208
logradius	494918
lower_bound	41025959
mydbllog2i	226835529
mydbllog2r	57609833
mydbllogr	9565235
mygprec	63860800
mygprec_absolute	4344138
mygprec_special	537476
mygprecrc	215546514
mygprecrc_special	2181405
myshiftic	136075717
myshiftrc	35575672
newton_polygon	5520702
optimize_split	494923
parameters	494921
pol_to_gaussint	17626667
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166695
quicktofp	6981192
realroots	50627
refine_F	503309
refine_H	2464551
root_error	1914420
roots	8368
roots_aux	240131
roots_com	240103
rootsdeg0	42
scalepol	4297337
scalepol2n	0
sol_ok	3378
solve_exact_pol	231495
split_0	495293
split_0_1	469144
split_0_2	469144
split_1	468774
split_2	494919
split_complete	1528056
split_fromU	494923
split_pols	166699
splitcauchy	166710
splitpoleval	5234766
tocomplex	1215871
update_radius	494920
usp	1126055

Generated by: LCOV version 1.16