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
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296304
RgX_gtofp_bit	7048058
RgX_normalize1	35703
X2XP1	5990903
ZX_Uspensky	1313938
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15199
ZX_graeffe	5439
ZX_realroots_irred	48568
ZX_rescale2prim	2233922
ZX_sturm	6395
ZX_sturm_i	123063
ZX_sturm_irred	116667
ZX_sturmpart	1128335
ZX_to_ZiX	16490360
ZiX_sqr	99222444
_gen_nored	11198471
_gen_one	14471079
_gen_zero	326017
_intervalcmp	0
_mp_add	24661752
_mp_cmul	34758542
_mp_mul	4374496
_mp_sqr	6298396
_mp_sub	0
_sqrtnr	22593
a_posteriori_errors	537469
abs_update	8020754
abs_update_r	780141
all_roots	536363
append_clone	1616175
bkeval_single_power	5234781
check_ab	1178957
checkbound	2355068
checkvalidpol	267212
clean_roots	536413
cleanroots	231763
cmp_complex_appr	2241477
conformal_basecase	1406458
conformal_mapping	468775
conformal_pol	1406575
dblexp	6562486
dbllog2	303987485
dft	503323
dual_modulus	1014472
eval_rel_pol	13168195
fft	14194204
fft2	7462
findpower	41028043
fix_roots	537470
fix_roots1	398790
fujiwara_bound	2272040
fujiwara_bound_real	1407014
graeffe	49602311
homothetie	1613557
homothetie2n	9978930
homothetie_gauss	36561870
ind_maxlog2	904339
initdft	998250
isexactpol	240103
isexactscalar	934017
isreal	963712
isvalidcoeff	1230439
logmax_modulus	4458613
logmin_modulus	1617688
logmodulus	608217
logpre_modulus	608216
logradius	494924
lower_bound	41027374
mydbllog2i	226844539
mydbllog2r	57610633
mydbllogr	9565254
mygprec	63861430
mygprec_absolute	4344181
mygprec_special	537472
mygprecrc	215561243
mygprecrc_special	2181415
myshiftic	136072126
myshiftrc	35576552
newton_polygon	5520725
optimize_split	494930
parameters	494927
pol_to_gaussint	17626850
polgraeffe	14
polmod_to_embed	84
polrootsbound	27102
polrootsbound_i	27095
polsolve	166707
quicktofp	6981488
realroots	50627
refine_F	503314
refine_H	2464571
root_error	1914393
roots	8368
roots_aux	240131
roots_com	240103
rootsdeg0	42
scalepol	4297363
scalepol2n	0
sol_ok	3378
solve_exact_pol	231495
split_0	495296
split_0_1	469150
split_0_2	469150
split_1	468782
split_2	494926
split_complete	1528060
split_fromU	494930
split_pols	166706
splitcauchy	166713
splitpoleval	5234910
tocomplex	1215872
update_radius	494925
usp	1126154

Generated by: LCOV version 1.16