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
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296305
RgX_gtofp_bit	7048058
RgX_normalize1	35705
X2XP1	5990911
ZX_Uspensky	1313936
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15203
ZX_graeffe	5439
ZX_realroots_irred	48572
ZX_rescale2prim	2233921
ZX_sturm	6395
ZX_sturm_i	123070
ZX_sturm_irred	116674
ZX_sturmpart	1128337
ZX_to_ZiX	16491180
ZiX_sqr	99237805
_gen_nored	11209675
_gen_one	14475847
_gen_zero	326019
_intervalcmp	0
_mp_add	24664938
_mp_cmul	34781735
_mp_mul	4374608
_mp_sqr	6298690
_mp_sub	0
_sqrtnr	22596
a_posteriori_errors	537473
abs_update	8021401
abs_update_r	780135
all_roots	536367
append_clone	1616175
bkeval_single_power	5236319
check_ab	1178963
checkbound	2355055
checkvalidpol	267214
clean_roots	536415
cleanroots	231763
cmp_complex_appr	2241491
conformal_basecase	1406454
conformal_mapping	468780
conformal_pol	1406574
dblexp	6562620
dbllog2	304084251
dft	503326
dual_modulus	1014496
eval_rel_pol	13168667
fft	14194799
fft2	7462
findpower	41031785
fix_roots	537472
fix_roots1	398791
fujiwara_bound	2272044
fujiwara_bound_real	1407008
graeffe	49610318
homothetie	1613580
homothetie2n	9979150
homothetie_gauss	36564984
ind_maxlog2	904366
initdft	998254
isexactpol	240103
isexactscalar	934017
isreal	963712
isvalidcoeff	1230445
logmax_modulus	4458658
logmin_modulus	1617693
logmodulus	608220
logpre_modulus	608221
logradius	494922
lower_bound	41031487
mydbllog2i	226897174
mydbllog2r	57613315
mydbllogr	9565781
mygprec	63864905
mygprec_absolute	4344235
mygprec_special	537475
mygprecrc	215576005
mygprecrc_special	2181408
myshiftic	136143931
myshiftrc	35577214
newton_polygon	5520785
optimize_split	494932
parameters	494930
pol_to_gaussint	17627300
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166700
quicktofp	6981493
realroots	50627
refine_F	503324
refine_H	2464577
root_error	1914411
roots	8368
roots_aux	240131
roots_com	240103
rootsdeg0	42
scalepol	4297388
scalepol2n	0
sol_ok	3378
solve_exact_pol	231495
split_0	495303
split_0_1	469150
split_0_2	469152
split_1	468780
split_2	494929
split_complete	1528063
split_fromU	494932
split_pols	166695
splitcauchy	166709
splitpoleval	5236454
tocomplex	1215876
update_radius	494932
usp	1126132

Generated by: LCOV version 1.16