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 30824-18397de1d0) Lines: 1467 1530 95.9 % Date: 2026-04-19 09:25:48 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	8382
ZX_deg1root	15204
_sqrtnr	22596
polrootsbound_i	27097
polrootsbound	27104
RgX_normalize1	35705
ZX_realroots_irred	48572
realroots	50627
ZX_sturm_irred	116676
ZX_sturm_i	123071
polsolve	166699
split_pols	166702
splitcauchy	166709
solve_exact_pol	231509
cleanroots	231763
isexactpol	240117
roots_com	240117
roots_aux	240145
checkvalidpol	267228
QX_complex_roots	296316
_gen_zero	325977
fix_roots1	398807
split_1	468814
conformal_mapping	468815
split_0_1	469185
split_0_2	469185
parameters	494966
update_radius	494966
logradius	494967
split_2	494969
split_fromU	494970
optimize_split	494971
split_0	495338
refine_F	503365
dft	503372
all_roots	536384
clean_roots	536432
fix_roots	537487
a_posteriori_errors	537491
mygprec_special	537495
logmodulus	608289
logpre_modulus	608298
abs_update_r	780214
ind_maxlog2	904416
isexactscalar	934122
isreal	963784
initdft	998341
dual_modulus	1014575
usp	1126085
ZX_sturmpart	1128282
check_ab	1178909
tocomplex	1216009
isvalidcoeff	1230557
ZX_Uspensky	1313882
conformal_basecase	1406566
conformal_pol	1406684
fujiwara_bound_real	1406964
split_complete	1528163
homothetie	1613739
append_clone	1616275
logmin_modulus	1617788
root_error	1914538
mygprecrc_special	2181549
ZX_rescale2prim	2233815
cmp_complex_appr	2241692
fujiwara_bound	2272873
checkbound	2354946
refine_H	2464737
scalepol	4297724
mygprec_absolute	4344484
_mp_mul	4374513
logmax_modulus	4458872
bkeval_single_power	5234625
splitpoleval	5234924
newton_polygon	5521409
X2XP1	5990657
_mp_sqr	6298160
dblexp	6563146
quicktofp	6984433
RgX_gtofp_bit	7048957
abs_update	8021444
mydbllogr	9566293
homothetie2n	9979969
_gen_nored	11200360
eval_rel_pol	13169975
fft	14196789
_gen_one	14469697
ZX_to_ZiX	16490439
pol_to_gaussint	17628731
_mp_add	24660893
_mp_cmul	34762298
myshiftrc	35580419
homothetie_gauss	36563137
findpower	41028319
lower_bound	41028806
graeffe	49604227
mydbllog2r	57618132
mygprec	63865644
ZiX_sqr	99220411
myshiftic	136089801
mygprecrc	215564752
mydbllog2i	226769220
dbllog2	303916935

Generated by: LCOV version 1.16