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 30764-6b81f1f3fa) Lines: 1467 1530 95.9 % Date: 2026-03-26 09:27:02 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296308
RgX_gtofp_bit	7048096
RgX_normalize1	35705
X2XP1	5990565
ZX_Uspensky	1313863
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15205
ZX_graeffe	5439
ZX_realroots_irred	48571
ZX_rescale2prim	2233782
ZX_sturm	6395
ZX_sturm_i	123071
ZX_sturm_irred	116676
ZX_sturmpart	1128268
ZX_to_ZiX	16491358
ZiX_sqr	99237914
_gen_nored	11210202
_gen_one	14474959
_gen_zero	326007
_intervalcmp	0
_mp_add	24664385
_mp_cmul	34781441
_mp_mul	4374622
_mp_sqr	6298559
_mp_sub	0
_sqrtnr	22598
a_posteriori_errors	537468
abs_update	8021304
abs_update_r	780145
all_roots	536369
append_clone	1616172
bkeval_single_power	5235997
check_ab	1178895
checkbound	2354920
checkvalidpol	267214
clean_roots	536413
cleanroots	231763
cmp_complex_appr	2241498
conformal_basecase	1406469
conformal_mapping	468787
conformal_pol	1406589
dblexp	6562635
dbllog2	304084685
dft	503328
dual_modulus	1014489
eval_rel_pol	13168686
fft	14194532
fft2	7462
findpower	41032304
fix_roots	537473
fix_roots1	398792
fujiwara_bound	2271980
fujiwara_bound_real	1406937
graeffe	49610095
homothetie	1613584
homothetie2n	9979120
homothetie_gauss	36565841
ind_maxlog2	904352
initdft	998260
isexactpol	240103
isexactscalar	934017
isreal	963719
isvalidcoeff	1230445
logmax_modulus	4458667
logmin_modulus	1617699
logmodulus	608224
logpre_modulus	608222
logradius	494926
lower_bound	41032123
mydbllog2i	226904634
mydbllog2r	57612954
mydbllogr	9565595
mygprec	63864882
mygprec_absolute	4344169
mygprec_special	537477
mygprecrc	215574162
mygprecrc_special	2181419
myshiftic	136147281
myshiftrc	35578140
newton_polygon	5520760
optimize_split	494932
parameters	494933
pol_to_gaussint	17627374
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166695
quicktofp	6981392
realroots	50627
refine_F	503324
refine_H	2464615
root_error	1914418
roots	8368
roots_aux	240131
roots_com	240103
rootsdeg0	42
scalepol	4297448
scalepol2n	0
sol_ok	3378
solve_exact_pol	231495
split_0	495302
split_0_1	469155
split_0_2	469155
split_1	468787
split_2	494933
split_complete	1528078
split_fromU	494932
split_pols	166699
splitcauchy	166703
splitpoleval	5236378
tocomplex	1215874
update_radius	494933
usp	1126071

Generated by: LCOV version 1.16