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 30818-1d7bcd2a3c) Lines: 1467 1530 95.9 % Date: 2026-04-16 09:26:05 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	15201
_sqrtnr	22594
polrootsbound_i	27097
polrootsbound	27104
RgX_normalize1	35705
ZX_realroots_irred	48570
realroots	50627
ZX_sturm_irred	116665
ZX_sturm_i	123060
split_pols	166699
splitcauchy	166709
polsolve	166710
solve_exact_pol	231509
cleanroots	231763
isexactpol	240117
roots_com	240117
roots_aux	240145
checkvalidpol	267228
QX_complex_roots	296309
_gen_zero	326000
fix_roots1	398803
split_1	468814
conformal_mapping	468815
split_0_1	469185
split_0_2	469185
logradius	494963
update_radius	494965
optimize_split	494967
parameters	494968
split_2	494968
split_fromU	494968
split_0	495335
refine_F	503355
dft	503368
all_roots	536375
clean_roots	536427
fix_roots	537479
a_posteriori_errors	537482
mygprec_special	537489
logmodulus	608283
logpre_modulus	608283
abs_update_r	780193
ind_maxlog2	904393
isexactscalar	934122
isreal	963781
initdft	998333
dual_modulus	1014562
usp	1126082
ZX_sturmpart	1128257
check_ab	1178884
tocomplex	1215970
isvalidcoeff	1230557
ZX_Uspensky	1313851
conformal_basecase	1406557
conformal_pol	1406676
fujiwara_bound_real	1406917
split_complete	1528150
homothetie	1613710
append_clone	1616255
logmin_modulus	1617797
root_error	1914495
mygprecrc_special	2181498
ZX_rescale2prim	2233886
cmp_complex_appr	2241646
fujiwara_bound	2272809
checkbound	2354900
refine_H	2464719
scalepol	4297702
mygprec_absolute	4344369
_mp_mul	4374525
logmax_modulus	4458878
bkeval_single_power	5234718
splitpoleval	5235142
newton_polygon	5521243
X2XP1	5990749
_mp_sqr	6298185
dblexp	6563116
quicktofp	6984184
RgX_gtofp_bit	7048723
abs_update	8021552
mydbllogr	9566238
homothetie2n	9979778
_gen_nored	11202018
eval_rel_pol	13169610
fft	14196708
_gen_one	14470312
ZX_to_ZiX	16491667
pol_to_gaussint	17628458
_mp_add	24661072
_mp_cmul	34765457
myshiftrc	35580508
homothetie_gauss	36563970
findpower	41027613
lower_bound	41028221
graeffe	49602534
mydbllog2r	57618834
mygprec	63864834
ZiX_sqr	99220690
myshiftic	136094337
mygprecrc	215567383
mydbllog2i	226782084
dbllog2	303934432

Generated by: LCOV version 1.16