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 30640-c2c58e18c5) Lines: 1467 1530 95.9 % Date: 2026-01-27 08:51:18 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	221764
RgX_gtofp_bit	6182179
RgX_normalize1	30687
X2XP1	5726390
ZX_Uspensky	1219153
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	10849
ZX_graeffe	5036
ZX_realroots_irred	40829
ZX_rescale2prim	2138465
ZX_sturm	6395
ZX_sturm_i	102483
ZX_sturm_irred	96088
ZX_sturmpart	1052322
ZX_to_ZiX	13453476
ZiX_sqr	89566361
_gen_nored	10436737
_gen_one	13534840
_gen_zero	308497
_intervalcmp	0
_mp_add	23466314
_mp_cmul	32913205
_mp_mul	4120347
_mp_sqr	5957588
_mp_sub	0
_sqrtnr	17990
a_posteriori_errors	462568
abs_update	7011078
abs_update_r	728845
all_roots	461477
append_clone	1406836
bkeval_single_power	4894717
check_ab	1102949
checkbound	2203028
checkvalidpol	261846
clean_roots	461512
cleanroots	231763
cmp_complex_appr	1823747
conformal_basecase	1279808
conformal_mapping	426564
conformal_pol	1279925
dblexp	5886100
dbllog2	268465334
dft	457362
dual_modulus	918044
eval_rel_pol	11688742
fft	12248925
fft2	7462
findpower	37254830
fix_roots	462570
fix_roots1	374634
fujiwara_bound	2041782
fujiwara_bound_real	1298694
graeffe	44777969
homothetie	1447925
homothetie2n	8920374
homothetie_gauss	33196819
ind_maxlog2	827472
initdft	907320
isexactpol	239753
isexactscalar	931714
isreal	876532
isvalidcoeff	1196697
logmax_modulus	4052785
logmin_modulus	1473631
logmodulus	537637
logpre_modulus	537639
logradius	449961
lower_bound	37254422
mydbllog2i	201174438
mydbllog2r	51665613
mydbllogr	8397548
mygprec	57288668
mygprec_absolute	3485752
mygprec_special	462571
mygprecrc	186495787
mygprecrc_special	1897183
myshiftic	120981338
myshiftrc	31514360
newton_polygon	4867961
optimize_split	449963
parameters	449960
pol_to_gaussint	15741441
polgraeffe	14
polmod_to_embed	84
polrootsbound	22086
polrootsbound_i	22079
polsolve	155649
quicktofp	6236534
realroots	50627
refine_F	457355
refine_H	2247073
root_error	1603231
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	3909198
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	450330
split_0_1	426931
split_0_2	426931
split_1	426569
split_2	449961
split_complete	1363221
split_fromU	449963
split_pols	155648
splitcauchy	155656
splitpoleval	4895514
tocomplex	942182
update_radius	449956
usp	1054847

Generated by: LCOV version 1.16