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 30616-7aa4fb0184) Lines: 1467 1530 95.9 % Date: 2026-01-17 09:22:32 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296168
RgX_gtofp_bit	7028922
RgX_normalize1	35733
X2XP1	5989832
ZX_Uspensky	1313663
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15199
ZX_graeffe	5390
ZX_realroots_irred	48562
ZX_rescale2prim	2233564
ZX_sturm	6395
ZX_sturm_i	122976
ZX_sturm_irred	116581
ZX_sturmpart	1128155
ZX_to_ZiX	16446785
ZiX_sqr	99012235
_gen_nored	11197407
_gen_one	14470516
_gen_zero	326014
_intervalcmp	0
_mp_add	24656511
_mp_cmul	34754924
_mp_mul	4374417
_mp_sqr	6298170
_mp_sub	0
_sqrtnr	22592
a_posteriori_errors	536972
abs_update	8003169
abs_update_r	778532
all_roots	535874
append_clone	1613493
bkeval_single_power	5234973
check_ab	1178783
checkbound	2354695
checkvalidpol	266892
clean_roots	535921
cleanroots	231763
cmp_complex_appr	2237202
conformal_basecase	1403478
conformal_mapping	467786
conformal_pol	1403596
dblexp	6547098
dbllog2	301976643
dft	502229
dual_modulus	1012191
eval_rel_pol	13134192
fft	14154850
fft2	7462
findpower	40945613
fix_roots	536977
fix_roots1	398350
fujiwara_bound	2270955
fujiwara_bound_real	1406640
graeffe	49488427
homothetie	1609608
homothetie2n	9954295
homothetie_gauss	36487117
ind_maxlog2	902435
initdft	996065
isexactpol	239753
isexactscalar	931714
isreal	961627
isvalidcoeff	1228149
logmax_modulus	4449468
logmin_modulus	1614317
logmodulus	606531
logpre_modulus	606533
logradius	493832
lower_bound	40945043
mydbllog2i	226338273
mydbllog2r	56168146
mydbllogr	9544311
mygprec	63739640
mygprec_absolute	4337372
mygprec_special	536982
mygprecrc	215111028
mygprecrc_special	2178254
myshiftic	135757798
myshiftrc	35494262
newton_polygon	5505147
optimize_split	493839
parameters	493835
pol_to_gaussint	17583664
polgraeffe	14
polmod_to_embed	84
polrootsbound	27132
polrootsbound_i	27125
polsolve	166694
quicktofp	6976640
realroots	50627
refine_F	502222
refine_H	2459922
root_error	1911609
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288079
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494202
split_0_1	468144
split_0_2	468144
split_1	467789
split_2	493838
split_complete	1525375
split_fromU	493839
split_pols	166696
splitcauchy	166699
splitpoleval	5234342
tocomplex	1213153
update_radius	493833
usp	1125880

Generated by: LCOV version 1.16