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 30849-48ff4d246c) Lines: 1467 1530 95.9 % Date: 2026-05-01 09:26:53 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	8382
ZX_deg1root	15203
_sqrtnr	22596
polrootsbound_i	27230
polrootsbound	27237
RgX_normalize1	35838
ZX_realroots_irred	48570
realroots	50627
ZX_sturm_irred	116685
ZX_sturm_i	123080
split_pols	166695
polsolve	166699
splitcauchy	166710
solve_exact_pol	231509
cleanroots	231763
isexactpol	240117
roots_com	240117
roots_aux	240145
checkvalidpol	267361
QX_complex_roots	296326
_gen_zero	326030
fix_roots1	398816
conformal_mapping	468802
split_1	468803
split_0_1	469173
split_0_2	469173
update_radius	494950
logradius	494954
parameters	494954
split_2	494954
optimize_split	494956
split_fromU	494956
split_0	495326
refine_F	503348
dft	503355
all_roots	536394
clean_roots	536442
fix_roots	537497
a_posteriori_errors	537501
mygprec_special	537504
logmodulus	608276
logpre_modulus	608276
abs_update_r	780202
ind_maxlog2	904392
isexactscalar	934122
isreal	963758
initdft	998308
dual_modulus	1014548
usp	1126075
ZX_sturmpart	1128263
check_ab	1178890
tocomplex	1215987
isvalidcoeff	1231117
ZX_Uspensky	1313871
conformal_basecase	1406523
conformal_pol	1406642
fujiwara_bound_real	1406960
split_complete	1528138
homothetie	1613691
append_clone	1616271
logmin_modulus	1617715
root_error	1914527
mygprecrc_special	2181568
ZX_rescale2prim	2233762
cmp_complex_appr	2241656
fujiwara_bound	2274014
checkbound	2354910
refine_H	2464660
scalepol	4297584
mygprec_absolute	4344436
_mp_mul	4374512
logmax_modulus	4458834
splitpoleval	5235209
bkeval_single_power	5235639
newton_polygon	5521266
X2XP1	5990498
_mp_sqr	6298417
dblexp	6562971
quicktofp	6987759
RgX_gtofp_bit	7048730
abs_update	8021308
mydbllogr	9566068
homothetie2n	9979720
_gen_nored	11199841
eval_rel_pol	13169546
fft	14196334
_gen_one	14472074
ZX_to_ZiX	16489637
pol_to_gaussint	17628351
_mp_add	24660208
_mp_cmul	34761514
myshiftrc	35579385
homothetie_gauss	36563597
lower_bound	41029933
findpower	41030223
graeffe	49601892
mydbllog2r	57620755
mygprec	63864151
ZiX_sqr	99228927
myshiftic	136062326
mygprecrc	215560131
mydbllog2i	226757165
dbllog2	303885267

Generated by: LCOV version 1.16