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 30724-b49b12e983) Lines: 1467 1530 95.9 % Date: 2026-03-02 09:24:58 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	5390
ZX_sturm	6395
fft2	7462
roots	8018
ZX_deg1root	15204
_sqrtnr	22597
polrootsbound_i	27125
polrootsbound	27132
RgX_normalize1	35733
ZX_realroots_irred	48570
realroots	50627
ZX_sturm_irred	116585
ZX_sturm_i	122980
split_pols	166692
polsolve	166697
splitcauchy	166702
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	266892
QX_complex_roots	296120
_gen_zero	326020
fix_roots1	398306
split_1	467817
conformal_mapping	467818
split_0_1	468176
split_0_2	468178
logradius	493865
parameters	493867
split_2	493867
update_radius	493867
optimize_split	493868
split_fromU	493868
split_0	494231
refine_F	502249
dft	502260
all_roots	535837
clean_roots	535880
a_posteriori_errors	536937
fix_roots	536937
mygprec_special	536942
logpre_modulus	606581
logmodulus	606586
abs_update_r	778559
ind_maxlog2	902484
isexactscalar	931714
isreal	961685
initdft	996127
dual_modulus	1012248
usp	1125905
ZX_sturmpart	1128190
check_ab	1178817
tocomplex	1213235
isvalidcoeff	1228149
ZX_Uspensky	1313690
conformal_basecase	1403565
conformal_pol	1403684
fujiwara_bound_real	1406668
split_complete	1525401
homothetie	1609712
append_clone	1613466
logmin_modulus	1614446
root_error	1911577
mygprecrc_special	2178173
ZX_rescale2prim	2233463
cmp_complex_appr	2237316
fujiwara_bound	2271060
checkbound	2354764
refine_H	2460084
scalepol	4288422
mygprec_absolute	4337602
_mp_mul	4374723
logmax_modulus	4449801
bkeval_single_power	5235815
splitpoleval	5236318
newton_polygon	5505563
X2XP1	5989616
_mp_sqr	6298526
dblexp	6547636
quicktofp	6977003
RgX_gtofp_bit	7029475
abs_update	8004589
mydbllogr	9545525
homothetie2n	9955139
_gen_nored	11208138
eval_rel_pol	13135321
fft	14156503
_gen_one	14475337
ZX_to_ZiX	16452826
pol_to_gaussint	17585073
_mp_add	24666414
_mp_cmul	34781917
myshiftrc	35497669
homothetie_gauss	36491139
lower_bound	40947862
findpower	40947998
graeffe	49503287
mydbllog2r	56173792
mygprec	63746014
ZiX_sqr	99019723
myshiftic	135856618
mygprecrc	215149227
mydbllog2i	226402289
dbllog2	302106661

Generated by: LCOV version 1.16