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
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296120
RgX_gtofp_bit	7029475
RgX_normalize1	35733
X2XP1	5989616
ZX_Uspensky	1313690
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15204
ZX_graeffe	5390
ZX_realroots_irred	48570
ZX_rescale2prim	2233463
ZX_sturm	6395
ZX_sturm_i	122980
ZX_sturm_irred	116585
ZX_sturmpart	1128190
ZX_to_ZiX	16452826
ZiX_sqr	99019723
_gen_nored	11208138
_gen_one	14475337
_gen_zero	326020
_intervalcmp	0
_mp_add	24666414
_mp_cmul	34781917
_mp_mul	4374723
_mp_sqr	6298526
_mp_sub	0
_sqrtnr	22597
a_posteriori_errors	536937
abs_update	8004589
abs_update_r	778559
all_roots	535837
append_clone	1613466
bkeval_single_power	5235815
check_ab	1178817
checkbound	2354764
checkvalidpol	266892
clean_roots	535880
cleanroots	231763
cmp_complex_appr	2237316
conformal_basecase	1403565
conformal_mapping	467818
conformal_pol	1403684
dblexp	6547636
dbllog2	302106661
dft	502260
dual_modulus	1012248
eval_rel_pol	13135321
fft	14156503
fft2	7462
findpower	40947998
fix_roots	536937
fix_roots1	398306
fujiwara_bound	2271060
fujiwara_bound_real	1406668
graeffe	49503287
homothetie	1609712
homothetie2n	9955139
homothetie_gauss	36491139
ind_maxlog2	902484
initdft	996127
isexactpol	239753
isexactscalar	931714
isreal	961685
isvalidcoeff	1228149
logmax_modulus	4449801
logmin_modulus	1614446
logmodulus	606586
logpre_modulus	606581
logradius	493865
lower_bound	40947862
mydbllog2i	226402289
mydbllog2r	56173792
mydbllogr	9545525
mygprec	63746014
mygprec_absolute	4337602
mygprec_special	536942
mygprecrc	215149227
mygprecrc_special	2178173
myshiftic	135856618
myshiftrc	35497669
newton_polygon	5505563
optimize_split	493868
parameters	493867
pol_to_gaussint	17585073
polgraeffe	14
polmod_to_embed	84
polrootsbound	27132
polrootsbound_i	27125
polsolve	166697
quicktofp	6977003
realroots	50627
refine_F	502249
refine_H	2460084
root_error	1911577
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288422
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494231
split_0_1	468176
split_0_2	468178
split_1	467817
split_2	493867
split_complete	1525401
split_fromU	493868
split_pols	166692
splitcauchy	166702
splitpoleval	5236318
tocomplex	1213235
update_radius	493867
usp	1125905

Generated by: LCOV version 1.16