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 30773-2078653b96) Lines: 1467 1530 95.9 % Date: 2026-04-01 09:27:34 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296311
RgX_gtofp_bit	7047896
RgX_normalize1	35705
X2XP1	5990635
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	48575
ZX_rescale2prim	2233833
ZX_sturm	6395
ZX_sturm_i	123070
ZX_sturm_irred	116673
ZX_sturmpart	1128278
ZX_to_ZiX	16491858
ZiX_sqr	99236226
_gen_nored	11199780
_gen_one	14471608
_gen_zero	326011
_intervalcmp	0
_mp_add	24660385
_mp_cmul	34762134
_mp_mul	4374438
_mp_sqr	6298450
_mp_sub	0
_sqrtnr	22598
a_posteriori_errors	537468
abs_update	8020860
abs_update_r	780117
all_roots	536368
append_clone	1616144
bkeval_single_power	5235457
check_ab	1178904
checkbound	2354939
checkvalidpol	267214
clean_roots	536412
cleanroots	231763
cmp_complex_appr	2241471
conformal_basecase	1406444
conformal_mapping	468775
conformal_pol	1406563
dblexp	6562447
dbllog2	304043735
dft	503319
dual_modulus	1014478
eval_rel_pol	13168316
fft	14194050
fft2	7462
findpower	41031059
fix_roots	537466
fix_roots1	398785
fujiwara_bound	2271982
fujiwara_bound_real	1406946
graeffe	49607777
homothetie	1613549
homothetie2n	9978922
homothetie_gauss	36565782
ind_maxlog2	904342
initdft	998244
isexactpol	240103
isexactscalar	934017
isreal	963703
isvalidcoeff	1230445
logmax_modulus	4458631
logmin_modulus	1617696
logmodulus	608201
logpre_modulus	608203
logradius	494923
lower_bound	41031197
mydbllog2i	226886447
mydbllog2r	57611943
mydbllogr	9565199
mygprec	63862632
mygprec_absolute	4344202
mygprec_special	537474
mygprecrc	215570670
mygprecrc_special	2181398
myshiftic	136112546
myshiftrc	35576549
newton_polygon	5520627
optimize_split	494927
parameters	494927
pol_to_gaussint	17626986
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166700
quicktofp	6981322
realroots	50627
refine_F	503314
refine_H	2464573
root_error	1914388
roots	8368
roots_aux	240131
roots_com	240103
rootsdeg0	42
scalepol	4297353
scalepol2n	0
sol_ok	3378
solve_exact_pol	231495
split_0	495295
split_0_1	469147
split_0_2	469148
split_1	468777
split_2	494924
split_complete	1528051
split_fromU	494927
split_pols	166703
splitcauchy	166711
splitpoleval	5235278
tocomplex	1215869
update_radius	494924
usp	1126062

Generated by: LCOV version 1.16