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: 2026-04-03 09:26:58 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	15200
_sqrtnr	22593
polrootsbound_i	27097
polrootsbound	27104
RgX_normalize1	35705
ZX_realroots_irred	48569
realroots	50627
ZX_sturm_irred	116670
ZX_sturm_i	123065
split_pols	166695
polsolve	166704
splitcauchy	166711
solve_exact_pol	231495
cleanroots	231763
isexactpol	240103
roots_com	240103
roots_aux	240131
checkvalidpol	267214
QX_complex_roots	296307
_gen_zero	326006
fix_roots1	398790
conformal_mapping	468775
split_1	468776
split_0_1	469144
split_0_2	469144
logradius	494921
optimize_split	494925
parameters	494925
split_2	494925
split_fromU	494925
update_radius	494925
split_0	495294
refine_F	503315
dft	503321
all_roots	536366
clean_roots	536411
fix_roots	537471
mygprec_special	537471
a_posteriori_errors	537472
logmodulus	608214
logpre_modulus	608217
abs_update_r	780114
ind_maxlog2	904347
isexactscalar	934017
isreal	963698
initdft	998244
dual_modulus	1014478
usp	1126111
ZX_sturmpart	1128371
check_ab	1178999
tocomplex	1215861
isvalidcoeff	1230445
ZX_Uspensky	1313968
conformal_basecase	1406446
conformal_pol	1406566
fujiwara_bound_real	1407033
split_complete	1528057
homothetie	1613560
append_clone	1616154
logmin_modulus	1617679
root_error	1914392
mygprecrc_special	2181406
ZX_rescale2prim	2233781
cmp_complex_appr	2241479
fujiwara_bound	2272064
checkbound	2355128
refine_H	2464601
scalepol	4297336
mygprec_absolute	4344161
_mp_mul	4374452
logmax_modulus	4458569
splitpoleval	5235273
bkeval_single_power	5235549
newton_polygon	5520743
X2XP1	5990576
_mp_sqr	6298475
dblexp	6562479
quicktofp	6981377
RgX_gtofp_bit	7048016
abs_update	8021299
mydbllogr	9565599
homothetie2n	9978981
_gen_nored	11200113
eval_rel_pol	13168397
fft	14194441
_gen_one	14472075
ZX_to_ZiX	16491845
pol_to_gaussint	17627003
_mp_add	24660793
_mp_cmul	34761453
myshiftrc	35576579
homothetie_gauss	36564368
lower_bound	41029411
findpower	41030115
graeffe	49603574
mydbllog2r	57611930
mygprec	63862746
ZiX_sqr	99230973
myshiftic	136080537
mygprecrc	215578631
mydbllog2i	226868763
dbllog2	304005440

Generated by: LCOV version 1.16