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
_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	22598
polrootsbound_i	27097
polrootsbound	27104
RgX_normalize1	35705
ZX_realroots_irred	48575
realroots	50627
ZX_sturm_irred	116673
ZX_sturm_i	123070
polsolve	166700
split_pols	166703
splitcauchy	166711
solve_exact_pol	231495
cleanroots	231763
isexactpol	240103
roots_com	240103
roots_aux	240131
checkvalidpol	267214
QX_complex_roots	296311
_gen_zero	326011
fix_roots1	398785
conformal_mapping	468775
split_1	468777
split_0_1	469147
split_0_2	469148
logradius	494923
split_2	494924
update_radius	494924
optimize_split	494927
parameters	494927
split_fromU	494927
split_0	495295
refine_F	503314
dft	503319
all_roots	536368
clean_roots	536412
fix_roots	537466
a_posteriori_errors	537468
mygprec_special	537474
logmodulus	608201
logpre_modulus	608203
abs_update_r	780117
ind_maxlog2	904342
isexactscalar	934017
isreal	963703
initdft	998244
dual_modulus	1014478
usp	1126062
ZX_sturmpart	1128278
check_ab	1178904
tocomplex	1215869
isvalidcoeff	1230445
ZX_Uspensky	1313876
conformal_basecase	1406444
conformal_pol	1406563
fujiwara_bound_real	1406946
split_complete	1528051
homothetie	1613549
append_clone	1616144
logmin_modulus	1617696
root_error	1914388
mygprecrc_special	2181398
ZX_rescale2prim	2233833
cmp_complex_appr	2241471
fujiwara_bound	2271982
checkbound	2354939
refine_H	2464573
scalepol	4297353
mygprec_absolute	4344202
_mp_mul	4374438
logmax_modulus	4458631
splitpoleval	5235278
bkeval_single_power	5235457
newton_polygon	5520627
X2XP1	5990635
_mp_sqr	6298450
dblexp	6562447
quicktofp	6981322
RgX_gtofp_bit	7047896
abs_update	8020860
mydbllogr	9565199
homothetie2n	9978922
_gen_nored	11199780
eval_rel_pol	13168316
fft	14194050
_gen_one	14471608
ZX_to_ZiX	16491858
pol_to_gaussint	17626986
_mp_add	24660385
_mp_cmul	34762134
myshiftrc	35576549
homothetie_gauss	36565782
findpower	41031059
lower_bound	41031197
graeffe	49607777
mydbllog2r	57611943
mygprec	63862632
ZiX_sqr	99236226
myshiftic	136112546
mygprecrc	215570670
mydbllog2i	226886447
dbllog2	304043735

Generated by: LCOV version 1.16