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 30813-28f64e5615) Lines: 1467 1530 95.9 % Date: 2026-04-14 09:26:12 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	8368
ZX_deg1root	15205
_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	166704
split_pols	166705
splitcauchy	166712
solve_exact_pol	231495
cleanroots	231763
isexactpol	240103
roots_com	240103
roots_aux	240131
checkvalidpol	267214
QX_complex_roots	296310
_gen_zero	326017
fix_roots1	398782
conformal_mapping	468773
split_1	468773
split_0_1	469143
split_0_2	469144
split_2	494924
update_radius	494924
logradius	494925
parameters	494925
split_fromU	494925
optimize_split	494926
split_0	495293
refine_F	503313
dft	503315
all_roots	536364
clean_roots	536408
fix_roots	537465
a_posteriori_errors	537470
mygprec_special	537475
logpre_modulus	608211
logmodulus	608212
abs_update_r	780121
ind_maxlog2	904351
isexactscalar	934017
isreal	963697
initdft	998239
dual_modulus	1014470
usp	1126085
ZX_sturmpart	1128282
check_ab	1178909
tocomplex	1215847
isvalidcoeff	1230445
ZX_Uspensky	1313876
conformal_basecase	1406435
conformal_pol	1406556
fujiwara_bound_real	1406965
split_complete	1528060
homothetie	1613550
append_clone	1616148
logmin_modulus	1617672
root_error	1914400
mygprecrc_special	2181398
ZX_rescale2prim	2233802
cmp_complex_appr	2241452
fujiwara_bound	2272832
checkbound	2354947
refine_H	2464570
scalepol	4297327
mygprec_absolute	4344068
_mp_mul	4374432
logmax_modulus	4458556
bkeval_single_power	5234982
splitpoleval	5235058
newton_polygon	5520632
X2XP1	5990586
_mp_sqr	6298295
dblexp	6562399
quicktofp	6984239
RgX_gtofp_bit	7047942
abs_update	8021034
mydbllogr	9565680
homothetie2n	9978811
_gen_nored	11200561
eval_rel_pol	13168157
fft	14194190
_gen_one	14470958
ZX_to_ZiX	16489370
pol_to_gaussint	17626652
_mp_add	24660739
_mp_cmul	34763280
myshiftrc	35575977
homothetie_gauss	36562026
lower_bound	41026968
findpower	41027091
graeffe	49600880
mydbllog2r	57614362
mygprec	63860894
ZiX_sqr	99214139
myshiftic	136061647
mygprecrc	215553431
mydbllog2i	226765516
dbllog2	303910852

Generated by: LCOV version 1.16