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
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296310
RgX_gtofp_bit	7047942
RgX_normalize1	35705
X2XP1	5990586
ZX_Uspensky	1313876
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15205
ZX_graeffe	5439
ZX_realroots_irred	48572
ZX_rescale2prim	2233802
ZX_sturm	6395
ZX_sturm_i	123071
ZX_sturm_irred	116676
ZX_sturmpart	1128282
ZX_to_ZiX	16489370
ZiX_sqr	99214139
_gen_nored	11200561
_gen_one	14470958
_gen_zero	326017
_intervalcmp	0
_mp_add	24660739
_mp_cmul	34763280
_mp_mul	4374432
_mp_sqr	6298295
_mp_sub	0
_sqrtnr	22596
a_posteriori_errors	537470
abs_update	8021034
abs_update_r	780121
all_roots	536364
append_clone	1616148
bkeval_single_power	5234982
check_ab	1178909
checkbound	2354947
checkvalidpol	267214
clean_roots	536408
cleanroots	231763
cmp_complex_appr	2241452
conformal_basecase	1406435
conformal_mapping	468773
conformal_pol	1406556
dblexp	6562399
dbllog2	303910852
dft	503315
dual_modulus	1014470
eval_rel_pol	13168157
fft	14194190
fft2	7462
findpower	41027091
fix_roots	537465
fix_roots1	398782
fujiwara_bound	2272832
fujiwara_bound_real	1406965
graeffe	49600880
homothetie	1613550
homothetie2n	9978811
homothetie_gauss	36562026
ind_maxlog2	904351
initdft	998239
isexactpol	240103
isexactscalar	934017
isreal	963697
isvalidcoeff	1230445
logmax_modulus	4458556
logmin_modulus	1617672
logmodulus	608212
logpre_modulus	608211
logradius	494925
lower_bound	41026968
mydbllog2i	226765516
mydbllog2r	57614362
mydbllogr	9565680
mygprec	63860894
mygprec_absolute	4344068
mygprec_special	537475
mygprecrc	215553431
mygprecrc_special	2181398
myshiftic	136061647
myshiftrc	35575977
newton_polygon	5520632
optimize_split	494926
parameters	494925
pol_to_gaussint	17626652
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166704
quicktofp	6984239
realroots	50627
refine_F	503313
refine_H	2464570
root_error	1914400
roots	8368
roots_aux	240131
roots_com	240103
rootsdeg0	42
scalepol	4297327
scalepol2n	0
sol_ok	3378
solve_exact_pol	231495
split_0	495293
split_0_1	469143
split_0_2	469144
split_1	468773
split_2	494924
split_complete	1528060
split_fromU	494925
split_pols	166705
splitcauchy	166712
splitpoleval	5235058
tocomplex	1215847
update_radius	494924
usp	1126085

Generated by: LCOV version 1.16