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
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296326
RgX_gtofp_bit	7048730
RgX_normalize1	35838
X2XP1	5990498
ZX_Uspensky	1313871
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15203
ZX_graeffe	5439
ZX_realroots_irred	48570
ZX_rescale2prim	2233762
ZX_sturm	6395
ZX_sturm_i	123080
ZX_sturm_irred	116685
ZX_sturmpart	1128263
ZX_to_ZiX	16489637
ZiX_sqr	99228927
_gen_nored	11199841
_gen_one	14472074
_gen_zero	326030
_intervalcmp	0
_mp_add	24660208
_mp_cmul	34761514
_mp_mul	4374512
_mp_sqr	6298417
_mp_sub	0
_sqrtnr	22596
a_posteriori_errors	537501
abs_update	8021308
abs_update_r	780202
all_roots	536394
append_clone	1616271
bkeval_single_power	5235639
check_ab	1178890
checkbound	2354910
checkvalidpol	267361
clean_roots	536442
cleanroots	231763
cmp_complex_appr	2241656
conformal_basecase	1406523
conformal_mapping	468802
conformal_pol	1406642
dblexp	6562971
dbllog2	303885267
dft	503355
dual_modulus	1014548
eval_rel_pol	13169546
fft	14196334
fft2	7462
findpower	41030223
fix_roots	537497
fix_roots1	398816
fujiwara_bound	2274014
fujiwara_bound_real	1406960
graeffe	49601892
homothetie	1613691
homothetie2n	9979720
homothetie_gauss	36563597
ind_maxlog2	904392
initdft	998308
isexactpol	240117
isexactscalar	934122
isreal	963758
isvalidcoeff	1231117
logmax_modulus	4458834
logmin_modulus	1617715
logmodulus	608276
logpre_modulus	608276
logradius	494954
lower_bound	41029933
mydbllog2i	226757165
mydbllog2r	57620755
mydbllogr	9566068
mygprec	63864151
mygprec_absolute	4344436
mygprec_special	537504
mygprecrc	215560131
mygprecrc_special	2181568
myshiftic	136062326
myshiftrc	35579385
newton_polygon	5521266
optimize_split	494956
parameters	494954
pol_to_gaussint	17628351
polgraeffe	14
polmod_to_embed	84
polrootsbound	27237
polrootsbound_i	27230
polsolve	166699
quicktofp	6987759
realroots	50627
refine_F	503348
refine_H	2464660
root_error	1914527
roots	8382
roots_aux	240145
roots_com	240117
rootsdeg0	42
scalepol	4297584
scalepol2n	0
sol_ok	3378
solve_exact_pol	231509
split_0	495326
split_0_1	469173
split_0_2	469173
split_1	468803
split_2	494954
split_complete	1528138
split_fromU	494956
split_pols	166695
splitcauchy	166710
splitpoleval	5235209
tocomplex	1215987
update_radius	494950
usp	1126075

Generated by: LCOV version 1.16