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 30792-987d9c52f6) Lines: 1467 1530 95.9 % Date: 2026-04-09 09:26:26 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	15199
_sqrtnr	22593
polrootsbound_i	27095
polrootsbound	27102
RgX_normalize1	35703
ZX_realroots_irred	48568
realroots	50627
ZX_sturm_irred	116667
ZX_sturm_i	123063
split_pols	166706
polsolve	166707
splitcauchy	166713
solve_exact_pol	231495
cleanroots	231763
isexactpol	240103
roots_com	240103
roots_aux	240131
checkvalidpol	267212
QX_complex_roots	296304
_gen_zero	326017
fix_roots1	398790
conformal_mapping	468775
split_1	468782
split_0_1	469150
split_0_2	469150
logradius	494924
update_radius	494925
split_2	494926
parameters	494927
optimize_split	494930
split_fromU	494930
split_0	495296
refine_F	503314
dft	503323
all_roots	536363
clean_roots	536413
a_posteriori_errors	537469
fix_roots	537470
mygprec_special	537472
logpre_modulus	608216
logmodulus	608217
abs_update_r	780141
ind_maxlog2	904339
isexactscalar	934017
isreal	963712
initdft	998250
dual_modulus	1014472
usp	1126154
ZX_sturmpart	1128335
check_ab	1178957
tocomplex	1215872
isvalidcoeff	1230439
ZX_Uspensky	1313938
conformal_basecase	1406458
conformal_pol	1406575
fujiwara_bound_real	1407014
split_complete	1528060
homothetie	1613557
append_clone	1616175
logmin_modulus	1617688
root_error	1914393
mygprecrc_special	2181415
ZX_rescale2prim	2233922
cmp_complex_appr	2241477
fujiwara_bound	2272040
checkbound	2355068
refine_H	2464571
scalepol	4297363
mygprec_absolute	4344181
_mp_mul	4374496
logmax_modulus	4458613
bkeval_single_power	5234781
splitpoleval	5234910
newton_polygon	5520725
X2XP1	5990903
_mp_sqr	6298396
dblexp	6562486
quicktofp	6981488
RgX_gtofp_bit	7048058
abs_update	8020754
mydbllogr	9565254
homothetie2n	9978930
_gen_nored	11198471
eval_rel_pol	13168195
fft	14194204
_gen_one	14471079
ZX_to_ZiX	16490360
pol_to_gaussint	17626850
_mp_add	24661752
_mp_cmul	34758542
myshiftrc	35576552
homothetie_gauss	36561870
lower_bound	41027374
findpower	41028043
graeffe	49602311
mydbllog2r	57610633
mygprec	63861430
ZiX_sqr	99222444
myshiftic	136072126
mygprecrc	215561243
mydbllog2i	226844539
dbllog2	303987485

Generated by: LCOV version 1.16