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 30762-238ab8e6c0) Lines: 1467 1530 95.9 % Date: 2026-03-22 09:27:12 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	15203
_sqrtnr	22596
polrootsbound_i	27097
polrootsbound	27104
RgX_normalize1	35705
ZX_realroots_irred	48572
realroots	50627
ZX_sturm_irred	116674
ZX_sturm_i	123070
split_pols	166695
polsolve	166700
splitcauchy	166709
solve_exact_pol	231495
cleanroots	231763
isexactpol	240103
roots_com	240103
roots_aux	240131
checkvalidpol	267214
QX_complex_roots	296305
_gen_zero	326019
fix_roots1	398791
conformal_mapping	468780
split_1	468780
split_0_1	469150
split_0_2	469152
logradius	494922
split_2	494929
parameters	494930
optimize_split	494932
split_fromU	494932
update_radius	494932
split_0	495303
refine_F	503324
dft	503326
all_roots	536367
clean_roots	536415
fix_roots	537472
a_posteriori_errors	537473
mygprec_special	537475
logmodulus	608220
logpre_modulus	608221
abs_update_r	780135
ind_maxlog2	904366
isexactscalar	934017
isreal	963712
initdft	998254
dual_modulus	1014496
usp	1126132
ZX_sturmpart	1128337
check_ab	1178963
tocomplex	1215876
isvalidcoeff	1230445
ZX_Uspensky	1313936
conformal_basecase	1406454
conformal_pol	1406574
fujiwara_bound_real	1407008
split_complete	1528063
homothetie	1613580
append_clone	1616175
logmin_modulus	1617693
root_error	1914411
mygprecrc_special	2181408
ZX_rescale2prim	2233921
cmp_complex_appr	2241491
fujiwara_bound	2272044
checkbound	2355055
refine_H	2464577
scalepol	4297388
mygprec_absolute	4344235
_mp_mul	4374608
logmax_modulus	4458658
bkeval_single_power	5236319
splitpoleval	5236454
newton_polygon	5520785
X2XP1	5990911
_mp_sqr	6298690
dblexp	6562620
quicktofp	6981493
RgX_gtofp_bit	7048058
abs_update	8021401
mydbllogr	9565781
homothetie2n	9979150
_gen_nored	11209675
eval_rel_pol	13168667
fft	14194799
_gen_one	14475847
ZX_to_ZiX	16491180
pol_to_gaussint	17627300
_mp_add	24664938
_mp_cmul	34781735
myshiftrc	35577214
homothetie_gauss	36564984
lower_bound	41031487
findpower	41031785
graeffe	49610318
mydbllog2r	57613315
mygprec	63864905
ZiX_sqr	99237805
myshiftic	136143931
mygprecrc	215576005
mydbllog2i	226897174
dbllog2	304084251

Generated by: LCOV version 1.16