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 30735-65f72320ad) Lines: 1467 1530 95.9 % Date: 2026-03-08 09:23:56 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	8018
ZX_deg1root	15203
_sqrtnr	22595
polrootsbound_i	27095
polrootsbound	27102
RgX_normalize1	35703
ZX_realroots_irred	48572
realroots	50627
ZX_sturm_irred	116672
ZX_sturm_i	123068
polsolve	166707
splitcauchy	166707
split_pols	166708
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	266862
QX_complex_roots	296301
_gen_zero	326012
fix_roots1	398479
split_1	468056
conformal_mapping	468059
split_0_1	468422
split_0_2	468422
split_2	494148
logradius	494150
update_radius	494151
parameters	494152
split_fromU	494153
optimize_split	494154
split_0	494515
refine_F	502540
dft	502542
all_roots	536012
clean_roots	536060
a_posteriori_errors	537106
fix_roots	537113
mygprec_special	537120
logmodulus	607103
logpre_modulus	607103
abs_update_r	779103
ind_maxlog2	903069
isexactscalar	931714
isreal	962209
initdft	996694
dual_modulus	1012845
usp	1126170
ZX_sturmpart	1128324
check_ab	1178987
tocomplex	1213851
isvalidcoeff	1228059
ZX_Uspensky	1313957
conformal_basecase	1404292
conformal_pol	1404412
fujiwara_bound_real	1407022
split_complete	1526143
homothetie	1610824
append_clone	1614338
logmin_modulus	1615192
root_error	1912450
mygprecrc_special	2179223
ZX_rescale2prim	2233920
cmp_complex_appr	2238481
fujiwara_bound	2271698
checkbound	2355104
refine_H	2461227
scalepol	4290718
mygprec_absolute	4339634
_mp_mul	4374671
logmax_modulus	4451876
bkeval_single_power	5235626
splitpoleval	5236238
newton_polygon	5510582
X2XP1	5990937
_mp_sqr	6298533
dblexp	6551737
quicktofp	6979450
RgX_gtofp_bit	7035446
abs_update	8008627
mydbllogr	9550500
homothetie2n	9962164
_gen_nored	11206576
eval_rel_pol	13144768
fft	14165934
_gen_one	14474580
ZX_to_ZiX	16452460
pol_to_gaussint	17596844
_mp_add	24665694
_mp_cmul	34775587
myshiftrc	35520027
homothetie_gauss	36506268
lower_bound	40966048
findpower	40966864
graeffe	49530453
mydbllog2r	56190138
mygprec	63777734
ZiX_sqr	99073637
myshiftic	135920202
mygprecrc	215233874
mydbllog2i	226502862
dbllog2	302213258

Generated by: LCOV version 1.16