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 30660-09c6d0ed2e) Lines: 1467 1530 95.9 % Date: 2026-02-01 09:23:44 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296177
RgX_gtofp_bit	7029271
RgX_normalize1	35731
X2XP1	5989964
ZX_Uspensky	1313742
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15201
ZX_graeffe	5390
ZX_realroots_irred	48564
ZX_rescale2prim	2233591
ZX_sturm	6395
ZX_sturm_i	122974
ZX_sturm_irred	116579
ZX_sturmpart	1128243
ZX_to_ZiX	16455359
ZiX_sqr	99024526
_gen_nored	11206413
_gen_one	14471630
_gen_zero	325977
_intervalcmp	0
_mp_add	24663813
_mp_cmul	34773316
_mp_mul	4374568
_mp_sqr	6298197
_mp_sub	0
_sqrtnr	22593
a_posteriori_errors	536989
abs_update	8004557
abs_update_r	778530
all_roots	535887
append_clone	1613557
bkeval_single_power	5235240
check_ab	1178870
checkbound	2354870
checkvalidpol	266890
clean_roots	535933
cleanroots	231763
cmp_complex_appr	2237335
conformal_basecase	1403537
conformal_mapping	467805
conformal_pol	1403657
dblexp	6547526
dbllog2	302108746
dft	502251
dual_modulus	1012249
eval_rel_pol	13134837
fft	14155734
fft2	7462
findpower	40948689
fix_roots	536990
fix_roots1	398355
fujiwara_bound	2271159
fujiwara_bound_real	1406719
graeffe	49505114
homothetie	1609698
homothetie2n	9954927
homothetie_gauss	36495201
ind_maxlog2	902522
initdft	996113
isexactpol	239753
isexactscalar	931714
isreal	961669
isvalidcoeff	1228143
logmax_modulus	4449748
logmin_modulus	1614416
logmodulus	606569
logpre_modulus	606565
logradius	493860
lower_bound	40947903
mydbllog2i	226413332
mydbllog2r	56173401
mydbllogr	9545410
mygprec	63746247
mygprec_absolute	4337643
mygprec_special	536994
mygprecrc	215150341
mygprecrc_special	2178321
myshiftic	135853665
myshiftrc	35496209
newton_polygon	5505407
optimize_split	493863
parameters	493862
pol_to_gaussint	17584645
polgraeffe	14
polmod_to_embed	84
polrootsbound	27130
polrootsbound_i	27123
polsolve	166690
quicktofp	6977133
realroots	50627
refine_F	502247
refine_H	2460067
root_error	1911685
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288349
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494228
split_0_1	468173
split_0_2	468173
split_1	467808
split_2	493861
split_complete	1525445
split_fromU	493862
split_pols	166692
splitcauchy	166700
splitpoleval	5235793
tocomplex	1213232
update_radius	493863
usp	1125962

Generated by: LCOV version 1.16