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 30786-ffec283a2b) Lines: 1467 1530 95.9 % Date: 2026-04-07 09:25:56 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	15204
_sqrtnr	22597
polrootsbound_i	27097
polrootsbound	27104
RgX_normalize1	35705
ZX_realroots_irred	48573
realroots	50627
ZX_sturm_irred	116673
ZX_sturm_i	123068
split_pols	166697
polsolve	166703
splitcauchy	166706
solve_exact_pol	231495
cleanroots	231763
isexactpol	240103
roots_com	240103
roots_aux	240131
checkvalidpol	267214
QX_complex_roots	296309
_gen_zero	325993
fix_roots1	398789
split_1	468778
conformal_mapping	468779
split_0_1	469145
split_0_2	469145
logradius	494923
parameters	494924
update_radius	494925
split_2	494926
split_fromU	494926
optimize_split	494927
split_0	495299
refine_F	503315
dft	503319
all_roots	536370
clean_roots	536405
fix_roots	537466
a_posteriori_errors	537470
mygprec_special	537474
logpre_modulus	608211
logmodulus	608220
abs_update_r	780123
ind_maxlog2	904362
isexactscalar	934017
isreal	963689
initdft	998245
dual_modulus	1014482
usp	1126044
ZX_sturmpart	1128277
check_ab	1178904
tocomplex	1215854
isvalidcoeff	1230445
ZX_Uspensky	1313870
conformal_basecase	1406449
conformal_pol	1406569
fujiwara_bound_real	1406950
split_complete	1528064
homothetie	1613560
append_clone	1616166
logmin_modulus	1617668
root_error	1914412
mygprecrc_special	2181405
ZX_rescale2prim	2233701
cmp_complex_appr	2241479
fujiwara_bound	2271982
checkbound	2354936
refine_H	2464574
scalepol	4297378
mygprec_absolute	4344066
_mp_mul	4374517
logmax_modulus	4458567
bkeval_single_power	5234488
splitpoleval	5234845
newton_polygon	5520668
X2XP1	5990324
_mp_sqr	6298152
dblexp	6562445
quicktofp	6981316
RgX_gtofp_bit	7048029
abs_update	8021070
mydbllogr	9565740
homothetie2n	9978843
_gen_nored	11199562
eval_rel_pol	13168358
fft	14194115
_gen_one	14469367
ZX_to_ZiX	16490651
pol_to_gaussint	17626840
_mp_add	24660395
_mp_cmul	34759673
myshiftrc	35576035
homothetie_gauss	36560659
lower_bound	41024037
findpower	41024516
graeffe	49601224
mydbllog2r	57610425
mygprec	63861238
ZiX_sqr	99212318
myshiftic	136063309
mygprecrc	215556252
mydbllog2i	226832566
dbllog2	303972853

Generated by: LCOV version 1.16